remcos | 1e4c43645fb4a1b4ca08c7b22b4e63d38f7fe76191abda38e84fcada08339bfc

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
21/10/2022, 08:24

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General

Target
Signed_PO_801221651.exe
Size 6KB
Sample221021-kap1vabcf9
SHA256 1e4c43645fb4a1b4ca08c7b22b4e63d38f7fe76191abda38e84fcada08339bfc
MD5 60032e284ee011f4f46fce76c60e138f
SHA1 f667ad3b3c50bd88c1c25ddd453f33acbfdb4dd9
SHA512 18ee51ebbdc2f85c282cfc66001d1951b9bd7ae723c64bfec159de8e02f29407b4c0f7afd074d5c14d68c4e7e1b39a85fdfd23e43015dfd0b5ae80fc6b084d6c
SSDEEP 48:62jgrsiEetneWESty89PYTaV6iIxdixNMr+2+zmbq5cSk9MXsAOsitiOlzM+J6M7:gieteWPtjA2VAdik+2+yJO+xi2BszNt
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos 55055 collection persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

55055

41.216.183.96:55055

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
RegardsRegards-NOWFJE
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1180-88-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/1180-92-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1240-89-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1240-90-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 5 IoCs

resource	yara_rule
behavioral1/memory/1640-87-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1180-88-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/1240-89-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1240-90-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1180-92-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	Signed_PO_801221651.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wgkmwmxuf = "\"C:\\Users\\Admin\\AppData\\Roaming\\Zofrbcbldrj\\Wgkmwmxuf.exe\""	Signed_PO_801221651.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1980 set thread context of 1808	1980	Signed_PO_801221651.exe	31
PID 1808 set thread context of 1240	1808	Signed_PO_801221651.exe	34
PID 1808 set thread context of 1180	1808	Signed_PO_801221651.exe	35
PID 1808 set thread context of 1640	1808	Signed_PO_801221651.exe	36

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1248	powershell.exe
1240	Signed_PO_801221651.exe
1240	Signed_PO_801221651.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
1808	Signed_PO_801221651.exe
1808	Signed_PO_801221651.exe
1808	Signed_PO_801221651.exe
1808	Signed_PO_801221651.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1980	Signed_PO_801221651.exe
Token: SeDebugPrivilege	1248	powershell.exe
Token: SeDebugPrivilege	1640	Signed_PO_801221651.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 1248	1980	Signed_PO_801221651.exe	28
PID 1980 wrote to memory of 1248	1980	Signed_PO_801221651.exe	28
PID 1980 wrote to memory of 1248	1980	Signed_PO_801221651.exe	28
PID 1980 wrote to memory of 1248	1980	Signed_PO_801221651.exe	28
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1980 wrote to memory of 1808	1980	Signed_PO_801221651.exe	31
PID 1808 wrote to memory of 1116	1808	Signed_PO_801221651.exe	33
PID 1808 wrote to memory of 1116	1808	Signed_PO_801221651.exe	33
PID 1808 wrote to memory of 1116	1808	Signed_PO_801221651.exe	33
PID 1808 wrote to memory of 1116	1808	Signed_PO_801221651.exe	33
PID 1808 wrote to memory of 1240	1808	Signed_PO_801221651.exe	34
PID 1808 wrote to memory of 1240	1808	Signed_PO_801221651.exe	34
PID 1808 wrote to memory of 1240	1808	Signed_PO_801221651.exe	34
PID 1808 wrote to memory of 1240	1808	Signed_PO_801221651.exe	34
PID 1808 wrote to memory of 1240	1808	Signed_PO_801221651.exe	34
PID 1808 wrote to memory of 1180	1808	Signed_PO_801221651.exe	35
PID 1808 wrote to memory of 1180	1808	Signed_PO_801221651.exe	35
PID 1808 wrote to memory of 1180	1808	Signed_PO_801221651.exe	35
PID 1808 wrote to memory of 1180	1808	Signed_PO_801221651.exe	35
PID 1808 wrote to memory of 1180	1808	Signed_PO_801221651.exe	35
PID 1808 wrote to memory of 1640	1808	Signed_PO_801221651.exe	36
PID 1808 wrote to memory of 1640	1808	Signed_PO_801221651.exe	36
PID 1808 wrote to memory of 1640	1808	Signed_PO_801221651.exe	36
PID 1808 wrote to memory of 1640	1808	Signed_PO_801221651.exe	36
PID 1808 wrote to memory of 1640	1808	Signed_PO_801221651.exe	36

C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe
"C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1248
- C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe
  C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1808
- - C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe
    C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe /stext "C:\Users\Admin\AppData\Local\Temp\owgsqsnbzprivzaocazqfnf"
    3⤵
    PID:1116
- - C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe
    C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe /stext "C:\Users\Admin\AppData\Local\Temp\owgsqsnbzprivzaocazqfnf"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:1240
- - C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe
    C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe /stext "C:\Users\Admin\AppData\Local\Temp\yylkjlycnxjmffwsllusqarrfu"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1180
- - C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe
    C:\Users\Admin\AppData\Local\Temp\Signed_PO_801221651.exe /stext "C:\Users\Admin\AppData\Local\Temp\jsrvkdjwbfbrhlkedogttfmzoapup"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

owgsqsnbzprivzaocazqfnf

Path C:\Users\Admin\AppData\Local\Temp\owgsqsnbzprivzaocazqfnf
Size 2B
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
MD5 SHA1 SHA512

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memory/1180-92-0x0000000000400000-0x0000000000457000-memory.dmp

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memory/1180-88-0x0000000000400000-0x0000000000457000-memory.dmp

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memory/1240-90-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/1240-89-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/1248-62-0x000000006EFB0000-0x000000006F55B000-memory.dmp

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memory/1248-61-0x000000006EFB0000-0x000000006F55B000-memory.dmp

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memory/1248-60-0x000000006EFB0000-0x000000006F55B000-memory.dmp

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memory/1640-87-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1808-69-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-71-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-64-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-75-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-79-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-80-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-93-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-63-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-73-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-70-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-68-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1808-66-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1980-57-0x0000000004E10000-0x0000000004EA2000-memory.dmp

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memory/1980-56-0x00000000057A0000-0x00000000058B0000-memory.dmp

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memory/1980-55-0x0000000075981000-0x0000000075983000-memory.dmp

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memory/1980-54-0x0000000001170000-0x0000000001178000-memory.dmp

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