remcos | a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 02:48

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General

Target

a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe
Size

682KB
MD5

f9848165fbabe0f8b34fb5d830b2fecc
SHA1

2c53840921153910eb84270e4e12d07e82b1451d
SHA256

a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093
SHA512

6dac265560ea2e03036a7737862893695ba512d2e9084325db0f1a56ba8022bd5ce4fd98fea4c515e9536e4d41a8f8845abfee128856640e374ec5055af4837c
SSDEEP

12288:7++g+++++++++++++++++G++++++++++++++++++++K++++Ubv+++++++++++++2:7++g+++++++++++++++++G+++++++++o

Score

10^/10

remcos remotehost collection discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

69.61.31.229:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
Rmc-EPE0FD
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Detected Nirsoft tools 3 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

Processes:

resource	yara_rule
behavioral2/memory/4420-81-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1840-80-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4776-86-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/4776-86-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/4420-81-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

msiexec.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	msiexec.exe

Blocklisted process makes network request 4 IoCs

Processes:

msiexec.exe

flow	pid	Process
30	3128	msiexec.exe
34	3128	msiexec.exe
36	3128	msiexec.exe
38	3128	msiexec.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

msiexec.exe

pid	Process
3128	msiexec.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

powershell.exemsiexec.exe

pid	Process
2192	powershell.exe
3128	msiexec.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

msiexec.exe

description	pid	Process	procid_target
PID 3128 set thread context of 4420	3128	msiexec.exe	94
PID 3128 set thread context of 4776	3128	msiexec.exe	95
PID 3128 set thread context of 1840	3128	msiexec.exe	96

Drops file in Windows directory 1 IoCs

Processes:

a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe

description	ioc	Process
File opened for modification	C:\Windows\brewsterite.mes	a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

Processes:

powershell.exe

pid	Process
2192	powershell.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exepowershell.exemsiexec.exemsiexec.exemsiexec.exemsiexec.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

powershell.exemsiexec.exemsiexec.exe

pid	Process
2192	powershell.exe
2192	powershell.exe
2192	powershell.exe
2192	powershell.exe
2192	powershell.exe
2192	powershell.exe
2192	powershell.exe
1840	msiexec.exe
1840	msiexec.exe
4420	msiexec.exe
4420	msiexec.exe
4420	msiexec.exe
4420	msiexec.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

powershell.exemsiexec.exe

pid	Process
2192	powershell.exe
3128	msiexec.exe
3128	msiexec.exe
3128	msiexec.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

powershell.exemsiexec.exe

description	pid	Process
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeIncreaseQuotaPrivilege	2192	powershell.exe
Token: SeSecurityPrivilege	2192	powershell.exe
Token: SeTakeOwnershipPrivilege	2192	powershell.exe
Token: SeLoadDriverPrivilege	2192	powershell.exe
Token: SeSystemProfilePrivilege	2192	powershell.exe
Token: SeSystemtimePrivilege	2192	powershell.exe
Token: SeProfSingleProcessPrivilege	2192	powershell.exe
Token: SeIncBasePriorityPrivilege	2192	powershell.exe
Token: SeCreatePagefilePrivilege	2192	powershell.exe
Token: SeBackupPrivilege	2192	powershell.exe
Token: SeRestorePrivilege	2192	powershell.exe
Token: SeShutdownPrivilege	2192	powershell.exe
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeSystemEnvironmentPrivilege	2192	powershell.exe
Token: SeRemoteShutdownPrivilege	2192	powershell.exe
Token: SeUndockPrivilege	2192	powershell.exe
Token: SeManageVolumePrivilege	2192	powershell.exe
Token: 33	2192	powershell.exe
Token: 34	2192	powershell.exe
Token: 35	2192	powershell.exe
Token: 36	2192	powershell.exe
Token: SeDebugPrivilege	1840	msiexec.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msiexec.exe

pid	Process
3128	msiexec.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exepowershell.exemsiexec.exe

description	pid	Process	procid_target
PID 1756 wrote to memory of 2192	1756	a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe	82
PID 1756 wrote to memory of 2192	1756	a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe	82
PID 1756 wrote to memory of 2192	1756	a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe	82
PID 2192 wrote to memory of 3128	2192	powershell.exe	91
PID 2192 wrote to memory of 3128	2192	powershell.exe	91
PID 2192 wrote to memory of 3128	2192	powershell.exe	91
PID 2192 wrote to memory of 3128	2192	powershell.exe	91
PID 3128 wrote to memory of 4420	3128	msiexec.exe	94
PID 3128 wrote to memory of 4420	3128	msiexec.exe	94
PID 3128 wrote to memory of 4420	3128	msiexec.exe	94
PID 3128 wrote to memory of 4420	3128	msiexec.exe	94
PID 3128 wrote to memory of 4776	3128	msiexec.exe	95
PID 3128 wrote to memory of 4776	3128	msiexec.exe	95
PID 3128 wrote to memory of 4776	3128	msiexec.exe	95
PID 3128 wrote to memory of 4776	3128	msiexec.exe	95
PID 3128 wrote to memory of 1840	3128	msiexec.exe	96
PID 3128 wrote to memory of 1840	3128	msiexec.exe	96
PID 3128 wrote to memory of 1840	3128	msiexec.exe	96
PID 3128 wrote to memory of 1840	3128	msiexec.exe	96

C:\Users\Admin\AppData\Local\Temp\a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe
"C:\Users\Admin\AppData\Local\Temp\a19b171658151c4a4af32dd17474a8184cc37a0d99138ae540177e15cebd9093.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle minimized "$Sontag=gc -Raw 'C:\Users\Admin\AppData\Roaming\Mirror\radials.Glu';$Dividivis=$Sontag.SubString(54192,3);.$Dividivis($Sontag)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\Windows\SysWOW64\msiexec.exe
    "C:\Windows\SysWOW64\msiexec.exe"
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3128
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\cifwzhyewj"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:4420
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\mdlozzigkrvlp"
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:4776
  - - C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\System32\msiexec.exe /stext "C:\Users\Admin\AppData\Local\Temp\pfyzastzgznyzzff"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
102B

MD5
8592437fec8875f1e37d08a5b5fda877

SHA1
daa84037b433ec0f0c4932ef08ecde91ea4acc20

SHA256
1fa7b315e8a607f46929bf723e89a76eff04ffba42d02c3040e9ec510159e05b

SHA512
aed0adb2f40af1d5115d660b328cca0fcae6dfe80dbec042f26543486910ce2e2d7225d23a1c33cf67344231e0ccad7b7eef6fd951684688c0a76baf0addbf8e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1dssjvk2.xki.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\cifwzhyewj

Filesize
4KB

MD5
57509a6a6267f17bef5e5da8b1df8829

SHA1
0886741be12c4e6dd24688df7b9568e91b2fc2aa

SHA256
4d50e4b2ee7b25d6a88dea6a28503975ca95f98e6e72fcd1ee754d016df3ed3d

SHA512
019c20a2354ef20ff3870ea4d544ae4e7ec21729bfbeb19d2dd2f8b087fcb6b83f259ab2f35e0f3c7f044ebb7c5bbfdfc63f23b811d458a15f5ad35aa9175228

Download Submit
C:\Users\Admin\AppData\Roaming\Mirror\Mnage.Uro

Filesize
336KB

MD5
876aa040a7c4760384b7b4cb49ea1fc1

SHA1
e9d2855670fcc3ca4244687da0f8b74087a61325

SHA256
6c30940c90bf68d8461f05835248c1d10e002c59d448458e01c4b18ae3afe70f

SHA512
4a52f6e778f06888a9955d50fc6cbfae1200b0fc8b6ed867ec6d6db7b965189b05ee6aa8b25de78afabde0a4db15c5f113ac366c088c5a5c0d23164c0504dee1

Download Submit
C:\Users\Admin\AppData\Roaming\Mirror\radials.Glu

Filesize
52KB

MD5
48bfb2d69f3a797169c8b44b71e7bb6a

SHA1
2a3e1bb359707f2ad6325b2f8520e95945ebc6fe

SHA256
95da5b6aa5c574eda69ebc3c020ad6163faa508e9bb37dd42f9b4290adc61ef0

SHA512
688344cc79016b6678acae2a4302b945f81cf5f9abc81b9c783b2d94381d11d4c3b8d2d066452be8ea21c8312cdd3ef59d4a41d0f95496a072a071c8dadbaf1d

Download Submit
memory/1840-78-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1840-79-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1840-80-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2192-57-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-51-0x0000000007F90000-0x0000000007F98000-memory.dmp

Filesize
32KB

Download
memory/2192-23-0x0000000006820000-0x000000000683E000-memory.dmp

Filesize
120KB

Download
memory/2192-24-0x0000000006850000-0x000000000689C000-memory.dmp

Filesize
304KB

Download
memory/2192-25-0x00000000079F0000-0x0000000007A86000-memory.dmp

Filesize
600KB

Download
memory/2192-26-0x0000000006D40000-0x0000000006D5A000-memory.dmp

Filesize
104KB

Download
memory/2192-27-0x0000000006D90000-0x0000000006DB2000-memory.dmp

Filesize
136KB

Download
memory/2192-28-0x0000000008090000-0x0000000008634000-memory.dmp

Filesize
5.6MB

Download
memory/2192-12-0x0000000006060000-0x00000000060C6000-memory.dmp

Filesize
408KB

Download
memory/2192-30-0x0000000008CC0000-0x000000000933A000-memory.dmp

Filesize
6.5MB

Download
memory/2192-62-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-31-0x0000000007C40000-0x0000000007C72000-memory.dmp

Filesize
200KB

Download
memory/2192-35-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-43-0x0000000007C20000-0x0000000007C3E000-memory.dmp

Filesize
120KB

Download
memory/2192-44-0x0000000007C90000-0x0000000007D33000-memory.dmp

Filesize
652KB

Download
memory/2192-45-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-46-0x0000000007DB0000-0x0000000007DBA000-memory.dmp

Filesize
40KB

Download
memory/2192-47-0x0000000007F10000-0x0000000007F21000-memory.dmp

Filesize
68KB

Download
memory/2192-48-0x0000000007F50000-0x0000000007F5E000-memory.dmp

Filesize
56KB

Download
memory/2192-49-0x0000000007F60000-0x0000000007F74000-memory.dmp

Filesize
80KB

Download
memory/2192-50-0x0000000007FC0000-0x0000000007FDA000-memory.dmp

Filesize
104KB

Download
memory/2192-10-0x0000000005870000-0x0000000005892000-memory.dmp

Filesize
136KB

Download
memory/2192-52-0x0000000008000000-0x000000000802A000-memory.dmp

Filesize
168KB

Download
memory/2192-53-0x0000000008030000-0x0000000008054000-memory.dmp

Filesize
144KB

Download
memory/2192-54-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-56-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-55-0x000000007424E000-0x000000007424F000-memory.dmp

Filesize
4KB

Download
memory/2192-4-0x000000007424E000-0x000000007424F000-memory.dmp

Filesize
4KB

Download
memory/2192-11-0x0000000005990000-0x00000000059F6000-memory.dmp

Filesize
408KB

Download
memory/2192-59-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-18-0x0000000006250000-0x00000000065A4000-memory.dmp

Filesize
3.3MB

Download
memory/2192-60-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-32-0x0000000074B10000-0x0000000074B5C000-memory.dmp

Filesize
304KB

Download
memory/2192-63-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-64-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-66-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-61-0x0000000009340000-0x000000000DCF1000-memory.dmp

Filesize
73.7MB

Download
memory/2192-6-0x0000000005270000-0x00000000052A6000-memory.dmp

Filesize
216KB

Download
memory/2192-7-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/2192-8-0x0000000005A30000-0x0000000006058000-memory.dmp

Filesize
6.2MB

Download
memory/2192-9-0x0000000074240000-0x00000000749F0000-memory.dmp

Filesize
7.7MB

Download
memory/3128-120-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-108-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-125-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-123-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-114-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-117-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-68-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-111-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-89-0x0000000022590000-0x00000000225A9000-memory.dmp

Filesize
100KB

Download
memory/3128-93-0x0000000022590000-0x00000000225A9000-memory.dmp

Filesize
100KB

Download
memory/3128-92-0x0000000022590000-0x00000000225A9000-memory.dmp

Filesize
100KB

Download
memory/3128-96-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-99-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-71-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-102-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/3128-105-0x0000000000F30000-0x0000000002184000-memory.dmp

Filesize
18.3MB

Download
memory/4420-81-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4420-73-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4420-75-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4420-77-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4776-86-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4776-85-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4776-74-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download