darkcomet | e5dfdf3d78191e8a2aeb5119d77ac30c0981bb07fec895fda19be0e135b845ae

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
15/07/2024, 16:10

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General

Target
4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe
Size 571KB
Sample240715-tmp12s1gkf
SHA256 e5dfdf3d78191e8a2aeb5119d77ac30c0981bb07fec895fda19be0e135b845ae
MD5 4a6afa2d6773f5663943a526b7028081
SHA1 ceba11694010bce35c337ca58640e7814847dcf7
SHA512 cfefa0842c9e73e76bcff5892abd30237738c6710e9ebabf9bbf36169708e38ad37b7539c97746170b0c61e7f9109332b0dda7a4af0c8085d041cd7eaf165278
SSDEEP 12288:cZ+hD8334nd94fscSSXLjB7zn0WE6h0oZIT1BIe8ZKuN/+y:zhDSIn4fscSS7jyWdhLg1yeGKZy
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet evasion persistence rat trojan upx

Malware Config

Signatures

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

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	svchost.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1976	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4692	svchost.exe

UPX packed file 13 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4692-8-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-12-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-16-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-14-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-18-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-17-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-21-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-23-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-22-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-24-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-25-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-27-0x0000000000400000-0x00000000004C3000-memory.dmp	upx
behavioral2/memory/4692-30-0x0000000000400000-0x00000000004C3000-memory.dmp	upx

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-1-5-21-1176886754-713327781-2233697964-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System Service = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Service.exe"	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4892 set thread context of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4692	svchost.exe
Token: SeSecurityPrivilege	4692	svchost.exe
Token: SeTakeOwnershipPrivilege	4692	svchost.exe
Token: SeLoadDriverPrivilege	4692	svchost.exe
Token: SeSystemProfilePrivilege	4692	svchost.exe
Token: SeSystemtimePrivilege	4692	svchost.exe
Token: SeProfSingleProcessPrivilege	4692	svchost.exe
Token: SeIncBasePriorityPrivilege	4692	svchost.exe
Token: SeCreatePagefilePrivilege	4692	svchost.exe
Token: SeBackupPrivilege	4692	svchost.exe
Token: SeRestorePrivilege	4692	svchost.exe
Token: SeShutdownPrivilege	4692	svchost.exe
Token: SeDebugPrivilege	4692	svchost.exe
Token: SeSystemEnvironmentPrivilege	4692	svchost.exe
Token: SeChangeNotifyPrivilege	4692	svchost.exe
Token: SeRemoteShutdownPrivilege	4692	svchost.exe
Token: SeUndockPrivilege	4692	svchost.exe
Token: SeManageVolumePrivilege	4692	svchost.exe
Token: SeImpersonatePrivilege	4692	svchost.exe
Token: SeCreateGlobalPrivilege	4692	svchost.exe
Token: 33	4692	svchost.exe
Token: 34	4692	svchost.exe
Token: 35	4692	svchost.exe
Token: 36	4692	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4692	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4892 wrote to memory of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86
PID 4892 wrote to memory of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86
PID 4892 wrote to memory of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86
PID 4892 wrote to memory of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86
PID 4892 wrote to memory of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86
PID 4892 wrote to memory of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86
PID 4892 wrote to memory of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86
PID 4892 wrote to memory of 4692	4892	4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe	86
PID 4692 wrote to memory of 224	4692	svchost.exe	87
PID 4692 wrote to memory of 224	4692	svchost.exe	87
PID 4692 wrote to memory of 224	4692	svchost.exe	87
PID 224 wrote to memory of 1976	224	cmd.exe	89
PID 224 wrote to memory of 1976	224	cmd.exe	89
PID 224 wrote to memory of 1976	224	cmd.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1976	attrib.exe

C:\Users\Admin\AppData\Local\Temp\4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4a6afa2d6773f5663943a526b7028081_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Users\Admin\AppData\Local\Temp\plugtemp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\\plugtemp\svchost.exe
  2⤵
  - Modifies firewall policy service
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4692
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp\svchost.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:224
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\plugtemp\svchost.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:1976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

svchost.exe

Path C:\Users\Admin\AppData\Local\Temp\plugtemp\svchost.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/4692-18-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-22-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-8-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-30-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-12-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-16-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-14-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-27-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-25-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-24-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-20-0x00000000025D0000-0x00000000025D1000-memory.dmp

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memory/4692-21-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-23-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4692-17-0x0000000000400000-0x00000000004C3000-memory.dmp

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memory/4892-19-0x0000000075130000-0x00000000756E1000-memory.dmp

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memory/4892-2-0x0000000075130000-0x00000000756E1000-memory.dmp

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memory/4892-0-0x0000000075132000-0x0000000075133000-memory.dmp

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memory/4892-1-0x0000000075130000-0x00000000756E1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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