Analysis
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max time kernel
24s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20250410-en -
resource tags
arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system -
submitted
17/04/2025, 01:42
Static task
static1
Behavioral task
behavioral1
Sample
Payroll List or Salary List.exe
Resource
win10v2004-20250410-en
Behavioral task
behavioral2
Sample
Payroll List or Salary List.exe
Resource
win11-20250410-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20250313-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win11-20250410-en
General
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Target
Payroll List or Salary List.exe
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Size
683KB
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MD5
269f0def6ce6a10c50f7e84d66a66245
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SHA1
b6dea434a16c4450c0f15a3c2db2a8589a11dda2
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SHA256
e6563416012431a5d2520d86517a92e9dc6e3fecd18c05ec146b3ed48015898b
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SHA512
78adce4e78a3a9b9a641c762311c91730246d168fd76c4a8c8b46c60252bb06ff74415ea8eef186b1b4da4da82dcbfbef09fb5692f3cc36ac2e4d9fb4ba2c14e
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SSDEEP
12288:OY/CpiGzdzUfNifQHBfxcYBJnCHYRU7sESS4L0TLmeVDr4+D7/UKz2Pl:OY/oisaNiYhf3HSsET2Nqf9/ml
Malware Config
Extracted
remcos
RemoteHost
196.251.116.218:2007
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audio_folder
MicRecords
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audio_path
ApplicationPath
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
true
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-85JH5C
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Guloader family
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Remcos family
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Detected Nirsoft tools 4 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
resource yara_rule behavioral1/memory/1120-175-0x0000000000400000-0x000000000047D000-memory.dmp Nirsoft behavioral1/memory/556-188-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral1/memory/2292-181-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral1/memory/1120-174-0x0000000000400000-0x000000000047D000-memory.dmp Nirsoft -
NirSoft MailPassView 1 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral1/memory/2292-181-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 2 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral1/memory/1120-175-0x0000000000400000-0x000000000047D000-memory.dmp WebBrowserPassView behavioral1/memory/1120-174-0x0000000000400000-0x000000000047D000-memory.dmp WebBrowserPassView -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2362875047-775336530-2205312478-1000\Control Panel\International\Geo\Nation Payroll List or Salary List.exe -
Executes dropped EXE 3 IoCs
pid Process 5488 remcos.exe 764 remcos.exe 4388 remcos.exe -
Loads dropped DLL 4 IoCs
pid Process 1212 Payroll List or Salary List.exe 1212 Payroll List or Salary List.exe 5488 remcos.exe 5488 remcos.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2362875047-775336530-2205312478-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-85JH5C = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" Payroll List or Salary List.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-85JH5C = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" Payroll List or Salary List.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
flow ioc 18 drive.google.com 19 drive.google.com 43 drive.google.com 57 drive.google.com -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Objectee.ini Payroll List or Salary List.exe File opened for modification C:\Windows\SysWOW64\Objectee.ini remcos.exe File opened for modification C:\Windows\SysWOW64\Objectee.ini remcos.exe File opened for modification C:\Windows\SysWOW64\Objectee.ini remcos.exe -
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
pid Process 3452 Payroll List or Salary List.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 1212 Payroll List or Salary List.exe 3452 Payroll List or Salary List.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\resources\0409\otto\asynchronisms.bin Payroll List or Salary List.exe File opened for modification C:\Windows\resources\0409\otto\asynchronisms.bin remcos.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Payroll List or Salary List.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Payroll List or Salary List.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1212 Payroll List or Salary List.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 1212 wrote to memory of 3452 1212 Payroll List or Salary List.exe 89 PID 1212 wrote to memory of 3452 1212 Payroll List or Salary List.exe 89 PID 1212 wrote to memory of 3452 1212 Payroll List or Salary List.exe 89 PID 1212 wrote to memory of 3452 1212 Payroll List or Salary List.exe 89 PID 3452 wrote to memory of 5488 3452 Payroll List or Salary List.exe 94 PID 3452 wrote to memory of 5488 3452 Payroll List or Salary List.exe 94 PID 3452 wrote to memory of 5488 3452 Payroll List or Salary List.exe 94 PID 5932 wrote to memory of 764 5932 cmd.exe 95 PID 5932 wrote to memory of 764 5932 cmd.exe 95 PID 5932 wrote to memory of 764 5932 cmd.exe 95 PID 4156 wrote to memory of 4388 4156 cmd.exe 96 PID 4156 wrote to memory of 4388 4156 cmd.exe 96 PID 4156 wrote to memory of 4388 4156 cmd.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\Payroll List or Salary List.exe"C:\Users\Admin\AppData\Local\Temp\Payroll List or Salary List.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1212 -
C:\Users\Admin\AppData\Local\Temp\Payroll List or Salary List.exe"C:\Users\Admin\AppData\Local\Temp\Payroll List or Salary List.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3452 -
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:5488 -
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵PID:3188
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C:\Windows\SysWOW64\recover.exeC:\Windows\SysWOW64\recover.exe /stext "C:\Users\Admin\AppData\Local\Temp\ttennksxjcehhxmhvdsnihfnxywlvfnssf"5⤵PID:1120
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C:\Windows\SysWOW64\recover.exeC:\Windows\SysWOW64\recover.exe /stext "C:\Users\Admin\AppData\Local\Temp\dnrgoc"5⤵PID:2292
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C:\Windows\SysWOW64\recover.exeC:\Windows\SysWOW64\recover.exe /stext "C:\Users\Admin\AppData\Local\Temp\ohwypnnstt"5⤵PID:556
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\ProgramData\Remcos\remcos.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4156 -
C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe2⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:4388
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\ProgramData\Remcos\remcos.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:5932 -
C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe2⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:764
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\ProgramData\Remcos\remcos.exe"1⤵PID:3000
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C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe2⤵PID:5512
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C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe3⤵PID:5336
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\ProgramData\Remcos\remcos.exe"1⤵PID:848
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C:\ProgramData\Remcos\remcos.exeC:\ProgramData\Remcos\remcos.exe2⤵PID:5144
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
683KB
MD5269f0def6ce6a10c50f7e84d66a66245
SHA1b6dea434a16c4450c0f15a3c2db2a8589a11dda2
SHA256e6563416012431a5d2520d86517a92e9dc6e3fecd18c05ec146b3ed48015898b
SHA51278adce4e78a3a9b9a641c762311c91730246d168fd76c4a8c8b46c60252bb06ff74415ea8eef186b1b4da4da82dcbfbef09fb5692f3cc36ac2e4d9fb4ba2c14e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5517b42c897481d3ef87c7d3590dc4556
SHA152db14d62d6e762bf4ee6458d4e562abffe66dd1
SHA2568b03de3b33087141fa82c1e1cd7e6c704a47d755316c62cbaa63b5eb84192af5
SHA51286c0d25d1825b6dbf3b415ec3e5ce87a55177bf9c9e6ff176dd98b8a44fe9082ae457d2b8c01c4f24c0e1e530c99307bce3c5600f1d1c9964e24551d99175b11
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B3513D73A177A2707D910183759B389B_D1B2C3FDC4CC18AB2F25B2BB5E2D4A02
Filesize471B
MD51d4632adbc075ecbc910f1dc1ea7aab7
SHA1aefef0d5a36d2ccbb0269d89acd7607c185563b9
SHA256da21852c5ec264fdf502462af387cc11b877e6df1a9cf6aa11634f084bde188f
SHA512e024a6cc7f80cf0b70479bb3d98593f7b2ee07ecf37eaa892a828f889614cdce3a6a3cb203a02d7150b593f2f48e9bf1e80635b07f2fe6d2a7f5685f6b9fe34b
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD5fac802a9ddb5629b7015c67a114dd9e0
SHA1264765fc8a0e14bcbe5b5d42bca462cbc5f903c4
SHA25620910684ef3508802ac5d5dae98d855fb9d21a744aa6045eaaadb4e9f448a93b
SHA5124104b7763a3509fe6605e5c76baac91c9bfa5003a002fd9ea82e7c278169577e6a1d808c720a1adb4fce8d40feeaeb6a71d325f51298724f2a6ee9d7ac293694
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B3513D73A177A2707D910183759B389B_D1B2C3FDC4CC18AB2F25B2BB5E2D4A02
Filesize402B
MD5de303d71b144ab57cb2a55db3f3613e2
SHA1bbecbe6b5e92aafaa871c9c810d7c95403b55456
SHA256fe4819586b858302d75e19f8c250301417030a23c0ff7bea08215851166af70a
SHA512f0d201d9671bafa53279354f7b833ad4c7b04f6fe10ce59eb4d124cfd38ba0a65de37bfa515d68c0a8a645e39cbc48e01973dcb8014a927f2b534b2ae0ddc0ec
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Filesize
12KB
MD5cff85c549d536f651d4fb8387f1976f2
SHA1d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
SHA2568dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
SHA512531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88
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Filesize
128KB
MD5f648582ccd6d701663d8cee0ae1aef8b
SHA1950d8746b488b0a14106dd305e5d4458d321bc20
SHA2564fcd2c8e7465a699a055d4ab74e0e2f2888d7d4498dcab35ce6e2eed088bacbf
SHA512a97baa4d5e532ef819797330315a54caa73176273e7bc24f199857230d5af6319a4bf0a9adc5c146862a9a217795726cff4d3df2a6604ca25b36bc0c7d1a3ea5
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Filesize
312KB
MD5de89e9a8ab72b9d958dcada9010dff47
SHA1cc4146145c5c8bde75ca65edf3fa12e01dc40299
SHA2562a838399586680d5ced2ab7a8ee8f12f1eba8af0099c4083b027df7a757e975b
SHA512bf52ef11197b84485cf308b15523168a7b6c3090e2d0eda5402f33eceb9cf317dc6dbcd4baa0b37744ffb6697d0c6ff5647c8aa7056c2736cf00b22f96390a07
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Filesize
97KB
MD576aa50f1e0bcb4ed44e0da686fb1115a
SHA1c2083f4218ab03cb5dd7e1fa12cc5b026a2b63fb
SHA256d7e7113a11841604012fdcb8037ca28de5161a3b9ccffcb8440fba1847e128d8
SHA5129e295d7881d9e7341f1082221bb5f5ebeee0fa9cb02c6c5ae58194037be23611e5e3a910101afa7509467445a430f459fb3c54016e2874df45781882a0498be4
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Filesize
92KB
MD5fb747707354f75cb2bd552556b0c1d42
SHA10c09a1ccce40052659bdf310569245356dc6bbb9
SHA256d7942e26ad71cccb0e61188868aee592a2e203cbe93810fcd36f7c8bca257a34
SHA512743244f863cdcc8ad36a020fce5f0948f19fcd7f522091e2342115f60ee945ab85bca907cddd07acc0a0116d564e3a113cb6a925cd98c645a37f108225127e9a
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Filesize
128KB
MD5936d66491f2ce399ed7e05c25f99aa42
SHA1cdf308c12744648b05a25f521b062a8a4189edd5
SHA256dc4f8119951815c8003228a91dbe919e51864932ce81726f1a151e8a02edc3b0
SHA512f74d3bd919f5e537ea78f90270de3ee9e9027d478e51aed7549950c240215b77cce42c9d5bfb0ea2000fae51d2843c4bea90a1909dd67b92f3a943a0ec67ccb4
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Filesize
394KB
MD5e394eba898e6c64de87228a8e2f86480
SHA156d3342568f90282edcb24da3d79559316d1f181
SHA256f2eaac6d269bf7ba5e033a525359ea1865dcb4008f8d320fa1883e90705b74f2
SHA512bd99eaf068ac0309ddf6ebfe7862dcd33b5fbb4cb350a7f18791d984600e70978e00348a32e0e8157e8a145eb50c18dd9617684ae3f009932eacdc67ba115413
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Filesize
370B
MD5313a9633a58de00315d4b8a88456dbd4
SHA1ac8642ba8fc5ad947be76992b388ba90c1f4f29d
SHA256cab61979083d60310c85253bc87b5047a40869b56f1d78885f45556a809f47e8
SHA512c274194f91eff6525d039f602bce9294ebfd805ee1382946a3f89fdf6e6c7e315ff50462c54c51a80da97de66c75e2b450d626b28ac31f391c85f9a6de1f87d1
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Filesize
39B
MD5cfc5144c3a75d5f817151ecf6e59b0f3
SHA1324399c734ad798dd6f1eead4534f6f9e6bbdd21
SHA256e8ec675329b6f0e7223548d4dae4fe8787e077ea654913ab4509d927ad5e0bba
SHA5121e91beba4352d45e4a784956c4b2c7cd19f3cc38bece8aa1f0729e4a4b6f334d8b55ff1083bf42c942b7c755740adae4e316654828c4c004bc838671505b2adb
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Filesize
256KB
MD5cc032ce233b84e2b1bfc749c866e4bb9
SHA13b28f78cd801a04d18c2f32b8d52bb7ea06a3a79
SHA2562d1b4bcbf706e3a9063f14259402a1be6d2075b20f32453528cecaea58ab10cc
SHA512fa74adc13b65f797d3f72ad760f9657a675b0683a7dd93669729e796cb22796c4399d200b271d75f183f1dbdc2bb659e4d61d64f1938a47aa83c1fbc483cb617
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Filesize
321KB
MD52bd23a1fe1db40048da512bea4500417
SHA1983f7443e7c4c8a37cc92b06b9aefee6e6bf57b9
SHA256f90b84e5e4fad7afcec2a9f9d29fbacde444ff121f6b1801c2dce6748fb05068
SHA512e0ce68c81576f52643b59ac448b949617810a62f9b093073304a443d879ab671b006a58c0e50b29197bf053c4d8c01670a3b9efe0d564dd9dd85e160bd281509
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Filesize
356KB
MD51c0e5e3fad38ad4c071145b0c91b1c75
SHA1d4332d34c719454b251de7fea2f7ebf74e9ce59f
SHA256c9d19087bf0a5cce7b23a791be76d2ed701b7dce69f86baefaa99e7a19fb1567
SHA5129b71e0ac39de87e365d87df4052922d545f90e9b899b962459b9f9e5598a19a36ce247e03cc916d76feef53c5a54a6ae7bb8694e08cfa28822a522f2782a6689
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Filesize
8KB
MD5a798defe4bd96ce304a2b64ba9db9451
SHA1ebe61d1bb9f882db6779e125239c94e24fa31ac8
SHA2564c4e725a9de497a0171cb912ae1039cf782bdda0791bc15e6960c643f36282b7
SHA5126e5b183e0fd717c7f56318f6cb8b2e273c5541d1c0205cb9af317d66a062613c9d5e08d601ed8164c6bb785349482f2406db34254bc886898a165b3608aebd69
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Filesize
616B
MD5059cb6042549f01a636176876a196d29
SHA1434624b61da12f82cd9dd001cf89071e289d6692
SHA256c937269a7ddc6b76b73dd9cbd9e64b318665f2c622b00a7ab6e8d0cc31583c2c
SHA5126fdd35b9bd2494f7a4831779cf5e55aa7620cc41c08915aca25279dc071f2016e6960c9c50a4d709a64a7b2d01234b11144e82159ad8a671535cade0c66ee208