darkcomet | c3bab0f648527f6f1ce39bd437ca304d57264c4d45dd2bddef79f39be956640e

Analysis

max time kernel
145s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 19:57

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General

Target
1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe
Size 804KB
Sample240627-ypeejszflm
SHA256 c3bab0f648527f6f1ce39bd437ca304d57264c4d45dd2bddef79f39be956640e
MD5 1753e5c51e39ae8b979d2b7ce213a446
SHA1 52e63b19aee9ba61c753593b0089cc6e352bf5cc
SHA512 879ec0e1b861b574062d20d5aa9be06020870103c86c932a014826882c9ba48443142cc660630fd8da467c8470a6cf4d59d70e6fb2c6767898a5199c328368d0
SSDEEP 12288:bK1q+iF0S+Xi+FSiSFVpIfi7CQc8FTnE97SFdmFnItdDlM2j:bICmS+XNF3aEsCQc8CSDo0dj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\system32dll.exe"	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
3280	system32dll.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\system32dll.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\system32dll.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\system32dll.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2136 set thread context of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	vbc.exe

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
928	PING.EXE
1852	PING.EXE
1544	PING.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1120	vbc.exe
Token: SeSecurityPrivilege	1120	vbc.exe
Token: SeTakeOwnershipPrivilege	1120	vbc.exe
Token: SeLoadDriverPrivilege	1120	vbc.exe
Token: SeSystemProfilePrivilege	1120	vbc.exe
Token: SeSystemtimePrivilege	1120	vbc.exe
Token: SeProfSingleProcessPrivilege	1120	vbc.exe
Token: SeIncBasePriorityPrivilege	1120	vbc.exe
Token: SeCreatePagefilePrivilege	1120	vbc.exe
Token: SeBackupPrivilege	1120	vbc.exe
Token: SeRestorePrivilege	1120	vbc.exe
Token: SeShutdownPrivilege	1120	vbc.exe
Token: SeDebugPrivilege	1120	vbc.exe
Token: SeSystemEnvironmentPrivilege	1120	vbc.exe
Token: SeChangeNotifyPrivilege	1120	vbc.exe
Token: SeRemoteShutdownPrivilege	1120	vbc.exe
Token: SeUndockPrivilege	1120	vbc.exe
Token: SeManageVolumePrivilege	1120	vbc.exe
Token: SeImpersonatePrivilege	1120	vbc.exe
Token: SeCreateGlobalPrivilege	1120	vbc.exe
Token: 33	1120	vbc.exe
Token: 34	1120	vbc.exe
Token: 35	1120	vbc.exe
Token: 36	1120	vbc.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 2136 wrote to memory of 1120	2136	1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe	91
PID 1120 wrote to memory of 2612	1120	vbc.exe	92
PID 1120 wrote to memory of 2612	1120	vbc.exe	92
PID 1120 wrote to memory of 2612	1120	vbc.exe	92
PID 1120 wrote to memory of 2520	1120	vbc.exe	94
PID 1120 wrote to memory of 2520	1120	vbc.exe	94
PID 1120 wrote to memory of 2520	1120	vbc.exe	94
PID 1120 wrote to memory of 564	1120	vbc.exe	95
PID 1120 wrote to memory of 564	1120	vbc.exe	95
PID 1120 wrote to memory of 564	1120	vbc.exe	95
PID 2612 wrote to memory of 1852	2612	cmd.exe	99
PID 2612 wrote to memory of 1852	2612	cmd.exe	99
PID 2612 wrote to memory of 1852	2612	cmd.exe	99
PID 564 wrote to memory of 928	564	cmd.exe	98
PID 564 wrote to memory of 928	564	cmd.exe	98
PID 564 wrote to memory of 928	564	cmd.exe	98
PID 2520 wrote to memory of 1544	2520	cmd.exe	100
PID 2520 wrote to memory of 1544	2520	cmd.exe	100
PID 2520 wrote to memory of 1544	2520	cmd.exe	100
PID 1120 wrote to memory of 3280	1120	vbc.exe	101
PID 1120 wrote to memory of 3280	1120	vbc.exe	101
PID 1120 wrote to memory of 3280	1120	vbc.exe	101

C:\Users\Admin\AppData\Local\Temp\1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1753e5c51e39ae8b979d2b7ce213a446_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1120
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2612
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 5
      4⤵
      Runs ping.exe
      PID:1852
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2520
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 5
      4⤵
      Runs ping.exe
      PID:1544
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:564
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 5
      4⤵
      Runs ping.exe
      PID:928
- - C:\Windows\SysWOW64\system32dll.exe
    "C:\Windows\system32\system32dll.exe"
    3⤵
    - Executes dropped EXE
    PID:3280

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4112 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:2780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpcmd.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat
Size 82B
SHA256 0a46d339ddfa8ccdfe17c055190f19e873120e9ae3722f6601464281d0011d60
MD5 638415f09175908af6b20ffa78526db1
SHA1 87c3527c6ad7721245820f68bfa32be11e0a916c
SHA512 85198b6a713218ed7d0ecf0b49c79d8ced0f7ff38f20ef11baa4a63fcbe1201069de08b79153d5a26d0efa3c1fefbfdb19326cf77335065abaf417cd21fd8a9b
MD5 SHA1 SHA512

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system32dll.exe

Path C:\Windows\SysWOW64\system32dll.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

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memory/1120-3-0x0000000000400000-0x00000000004CB000-memory.dmp

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memory/1120-4-0x0000000000400000-0x00000000004CB000-memory.dmp

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memory/1120-6-0x0000000000400000-0x00000000004CB000-memory.dmp

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memory/1120-8-0x0000000000400000-0x00000000004CB000-memory.dmp

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memory/1120-9-0x0000000000400000-0x00000000004CB000-memory.dmp

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memory/1120-83-0x0000000000400000-0x00000000004CB000-memory.dmp

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memory/2136-0-0x0000000074FB2000-0x0000000074FB3000-memory.dmp

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memory/2136-1-0x0000000074FB0000-0x0000000075561000-memory.dmp

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memory/2136-2-0x0000000074FB0000-0x0000000075561000-memory.dmp

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memory/2136-7-0x0000000074FB0000-0x0000000075561000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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