darkcomet | 105744effd85b1afe3c9c6d5107a43cbb054aef1946a9214a2cbf33e8c35f745

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27/02/2025, 11:41

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General

Target

JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Size

907KB
MD5

2cf872857dfedfb5cfbd0aa8d60680d2
SHA1

2751ff50ff652a2dbeaef8bd35c398a14462050e
SHA256

105744effd85b1afe3c9c6d5107a43cbb054aef1946a9214a2cbf33e8c35f745
SHA512

7dec920e2740d3aae5111dfd490ea3db2f7623a5f32bf583983caca27bb5a9554721a2ce587be43a5b4acac9aec998d12bd00f71a06da61f00c38ed6506a3804
SSDEEP

12288:qxRHlC84eaDsdMI2R/I+neRKYlZ6u7jgPL2dLhF2xQGBLwP11wbPTmROzCppg6pf:k685a4dJ+c6uPgPoLOBH0A4DGS

Score

10^/10

darkcomet windows defense_evasion discovery persistence rat themida trojan

Malware Config

Extracted

Family

darkcomet

Botnet

windows

dynamichost.no-ip.org:1604

Mutex

DC_MUTEX-T7SQWEY

Attributes

InstallPath
explorer.exe
gencode
S$51*+FXvRd2
install
true
offline_keylogger
true
persistence
true
reg_key
winupdater

rc4.plain

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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\explorer.exe"	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Deletes itself 1 IoCs

pid	Process
2660	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2656	explorer.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

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

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Loads dropped DLL 1 IoCs

pid	Process
2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2284-0-0x0000000000400000-0x0000000000606000-memory.dmp	themida
behavioral1/memory/2284-1-0x0000000000400000-0x0000000000606000-memory.dmp	themida
behavioral1/memory/2284-2-0x0000000000400000-0x0000000000606000-memory.dmp	themida
behavioral1/memory/2284-4-0x0000000000400000-0x0000000000606000-memory.dmp	themida
behavioral1/memory/2284-6-0x0000000000400000-0x0000000000606000-memory.dmp	themida
behavioral1/memory/2284-5-0x0000000000400000-0x0000000000606000-memory.dmp	themida
behavioral1/memory/2284-17-0x0000000000400000-0x0000000000606000-memory.dmp	themida

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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\explorer.exe"	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\explorer.exe	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
File opened for modification	C:\Windows\SysWOW64\	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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

pid	Process
2636	PING.EXE

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2636	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeSecurityPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeTakeOwnershipPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeLoadDriverPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeSystemProfilePrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeSystemtimePrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeProfSingleProcessPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeIncBasePriorityPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeCreatePagefilePrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeBackupPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeRestorePrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeShutdownPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeDebugPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeSystemEnvironmentPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeChangeNotifyPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeRemoteShutdownPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeUndockPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeManageVolumePrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeImpersonatePrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: SeCreateGlobalPrivilege	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: 33	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: 34	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
Token: 35	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 2656	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe	28
PID 2284 wrote to memory of 2656	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe	28
PID 2284 wrote to memory of 2656	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe	28
PID 2284 wrote to memory of 2656	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe	28
PID 2284 wrote to memory of 2660	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe	29
PID 2284 wrote to memory of 2660	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe	29
PID 2284 wrote to memory of 2660	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe	29
PID 2284 wrote to memory of 2660	2284	JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe	29
PID 2660 wrote to memory of 2636	2660	cmd.exe	31
PID 2660 wrote to memory of 2636	2660	cmd.exe	31
PID 2660 wrote to memory of 2636	2660	cmd.exe	31
PID 2660 wrote to memory of 2636	2660	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2cf872857dfedfb5cfbd0aa8d60680d2.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
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2284
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\system32\explorer.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2656
- 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:2660
- - 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:2636

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

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Downloads

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

Filesize
119B

MD5
58412ffbd83207777560df697a7ad675

SHA1
ba7bdea4001b4d4305e2cd0b13e48bc97703101a

SHA256
625f647f190a8c4127ba96f4c7d3d7e313c38b188bd895e9ca1c9a2258ca2b28

SHA512
f3946cdc2a4748012e4a762486b0b61da3f1c94fdbf32c908ddc0953744e18cb590bc2dc05b68db598542e7280b58d4684d6c53df8c062d56eda3264a2a25ac8

Download Submit
\Windows\SysWOW64\explorer.exe

Filesize
2.5MB

MD5
40d777b7a95e00593eb1568c68514493

SHA1
89a175a12bc20104770d0ef83e553f8b0e06274b

SHA256
0a8ce026714e03e72c619307bd598add5f9b639cfd91437cb8d9c847bf9f6894

SHA512
d5719baef8bef791ef99b4c88d449d45f199638438bd929c1a3e7a74309931c72e03567633135a4fcf4c92e2b53e552f9526cba2e1d85383906d3c1aa21dd67f

Download Submit
memory/2284-0-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/2284-1-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/2284-2-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/2284-4-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/2284-6-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/2284-5-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/2284-3-0x0000000000401000-0x0000000000455000-memory.dmp

Filesize
336KB

Download
memory/2284-17-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download