darkcomet | 3d73d9137f3b6ce27858fdad0bc0038abe2ed9920e60deda6b571fcf493ef068

Analysis

max time kernel
149s
max time network
127s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02-11-2024 18:23

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General

Target

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Size

1.2MB
MD5

86f193aaf758861c331ca48e9ebba3b1
SHA1

bf5bc11347819a2647c49e28f2d52ac17f64081b
SHA256

3d73d9137f3b6ce27858fdad0bc0038abe2ed9920e60deda6b571fcf493ef068
SHA512

9d65f9553bc3919926836917cfca5858f967bf5e036148d0bd069d7fa404b8639a600b624d80a32e0d0172b25e606b75e69082580930478766ad206ba688eea3
SSDEEP

24576:drk1rYb5zdQO0vUL70GvcHRjgOPBoPuQNoCBUodr5eZIyySjEFz27bCHhD/O2YWR:VkqFzkuBIzjFV4YPmtxWBqgIG4

Score

10^/10

darkcomet discovery evasion persistence rat themida trojan

Malware Config

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\xxxx.exe"	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exexxxx.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	xxxx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	xxxx.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
2604	cmd.exe

Executes dropped EXE 1 IoCs

Processes:

xxxx.exe

pid	Process
2916	xxxx.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exexxxx.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	xxxx.exe

Loads dropped DLL 2 IoCs

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe

pid	Process
2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe

Themida packer 23 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/2448-0-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2448-2-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/files/0x000900000001756b-6.dat	themida
behavioral1/memory/2916-15-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2448-24-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-26-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-27-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-29-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-30-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-31-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-32-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-33-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-34-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-35-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-36-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-37-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-38-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-39-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-40-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-41-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-42-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-43-0x0000000000400000-0x000000000053F000-memory.dmp	themida
behavioral1/memory/2916-44-0x0000000000400000-0x000000000053F000-memory.dmp	themida

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\zzzz = "C:\\Windupdt\\xxxx.exe"	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.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 4 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:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exexxxx.execmd.exePING.EXE

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xxxx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

Processes:

PING.EXE

pid	Process
1988	PING.EXE

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exexxxx.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	xxxx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	xxxx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	xxxx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	xxxx.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exexxxx.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xxxx.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
1988	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

xxxx.exe

pid	Process
2916	xxxx.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exexxxx.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeSecurityPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeBackupPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeRestorePrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeShutdownPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeDebugPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeUndockPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: 33	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: 34	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: 35	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2916	xxxx.exe
Token: SeSecurityPrivilege	2916	xxxx.exe
Token: SeTakeOwnershipPrivilege	2916	xxxx.exe
Token: SeLoadDriverPrivilege	2916	xxxx.exe
Token: SeSystemProfilePrivilege	2916	xxxx.exe
Token: SeSystemtimePrivilege	2916	xxxx.exe
Token: SeProfSingleProcessPrivilege	2916	xxxx.exe
Token: SeIncBasePriorityPrivilege	2916	xxxx.exe
Token: SeCreatePagefilePrivilege	2916	xxxx.exe
Token: SeBackupPrivilege	2916	xxxx.exe
Token: SeRestorePrivilege	2916	xxxx.exe
Token: SeShutdownPrivilege	2916	xxxx.exe
Token: SeDebugPrivilege	2916	xxxx.exe
Token: SeSystemEnvironmentPrivilege	2916	xxxx.exe
Token: SeChangeNotifyPrivilege	2916	xxxx.exe
Token: SeRemoteShutdownPrivilege	2916	xxxx.exe
Token: SeUndockPrivilege	2916	xxxx.exe
Token: SeManageVolumePrivilege	2916	xxxx.exe
Token: SeImpersonatePrivilege	2916	xxxx.exe
Token: SeCreateGlobalPrivilege	2916	xxxx.exe
Token: 33	2916	xxxx.exe
Token: 34	2916	xxxx.exe
Token: 35	2916	xxxx.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.execmd.exe

description	pid	Process	procid_target
PID 2448 wrote to memory of 2916	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe	30
PID 2448 wrote to memory of 2916	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe	30
PID 2448 wrote to memory of 2916	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe	30
PID 2448 wrote to memory of 2916	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe	30
PID 2448 wrote to memory of 2604	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe	31
PID 2448 wrote to memory of 2604	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe	31
PID 2448 wrote to memory of 2604	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe	31
PID 2448 wrote to memory of 2604	2448	86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe	31
PID 2604 wrote to memory of 1988	2604	cmd.exe	33
PID 2604 wrote to memory of 1988	2604	cmd.exe	33
PID 2604 wrote to memory of 1988	2604	cmd.exe	33
PID 2604 wrote to memory of 1988	2604	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\86f193aaf758861c331ca48e9ebba3b1_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windupdt\xxxx.exe
  "C:\Windupdt\xxxx.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:2916
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2604
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1988

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

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

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat

Filesize
119B

MD5
1f5d05877ded024e2e81a56c63a99dc6

SHA1
38fdaed9ff81fb571172ae6fb6012a0995ebdf78

SHA256
44d6be8753fd193b74b9fbc34050fb6d27bc56de9ad06d778e7ca83136a481ac

SHA512
42f21a465480011a6f52dc6c8ac9cfa8dedd90f3a4ed5ccae1e4ea8b8ac169d72de19bbd1fe08b70448d4c032c11382b19f3b98ce4cb653f4afa84bff802c07b

Download Submit
\Windupdt\xxxx.exe

Filesize
1.2MB

MD5
86f193aaf758861c331ca48e9ebba3b1

SHA1
bf5bc11347819a2647c49e28f2d52ac17f64081b

SHA256
3d73d9137f3b6ce27858fdad0bc0038abe2ed9920e60deda6b571fcf493ef068

SHA512
9d65f9553bc3919926836917cfca5858f967bf5e036148d0bd069d7fa404b8639a600b624d80a32e0d0172b25e606b75e69082580930478766ad206ba688eea3

Download Submit
memory/2448-25-0x0000000000401000-0x00000000004BC000-memory.dmp

Filesize
748KB

Download
memory/2448-2-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2448-1-0x0000000000401000-0x00000000004BC000-memory.dmp

Filesize
748KB

Download
memory/2448-13-0x0000000005270000-0x00000000053AF000-memory.dmp

Filesize
1.2MB

Download
memory/2448-0-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2448-24-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-30-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-35-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-27-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-29-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-15-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-31-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-32-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-33-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-34-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-26-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-36-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-37-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-38-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-39-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-40-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-41-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-42-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-43-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download
memory/2916-44-0x0000000000400000-0x000000000053F000-memory.dmp

Filesize
1.2MB

Download