darkcomet | 327f07cd24c80890ccb59b357c3b3b43f2677611b79e75a48fea41bd13f9c4bd

General

Target

JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe
Size

308KB
MD5

2f1a1badc1a79faf8a4a0431c263579b
SHA1

1e6e83589b5bfc0d537f133c4700957f24e8f61e
SHA256

327f07cd24c80890ccb59b357c3b3b43f2677611b79e75a48fea41bd13f9c4bd
SHA512

f2011b65ff171f9bd1f345817ca2b762fc67de8daea13fd3c3faf3515f6a21cd5b3fd6bf3634f7bd579dae8cb708d4915a711823b83704ddb5f26d4f9c902a88
SSDEEP

6144:C0M4E7FBVUlcGFpbUY9R+rBywLWbvOm8b8yhKJgobfKycJ4nu:C3bnVUlcGjZWynvLHygLKyuK

Score

10^/10

darkcomet guest16 discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

severfin.no-ip.biz:10111

Mutex

DC_MUTEX-KW3265T

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
cm7bvMvxrvgA
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
2952	svchost.exe
2768	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe
2952	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\Java = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Java.exe"	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2712 set thread context of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2952-23-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-22-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-16-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-14-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-10-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-8-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-26-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-25-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-24-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-28-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2952-37-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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 3 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeDebugPrivilege	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe
Token: SeIncreaseQuotaPrivilege	2952	svchost.exe
Token: SeSecurityPrivilege	2952	svchost.exe
Token: SeTakeOwnershipPrivilege	2952	svchost.exe
Token: SeLoadDriverPrivilege	2952	svchost.exe
Token: SeSystemProfilePrivilege	2952	svchost.exe
Token: SeSystemtimePrivilege	2952	svchost.exe
Token: SeProfSingleProcessPrivilege	2952	svchost.exe
Token: SeIncBasePriorityPrivilege	2952	svchost.exe
Token: SeCreatePagefilePrivilege	2952	svchost.exe
Token: SeBackupPrivilege	2952	svchost.exe
Token: SeRestorePrivilege	2952	svchost.exe
Token: SeShutdownPrivilege	2952	svchost.exe
Token: SeDebugPrivilege	2952	svchost.exe
Token: SeSystemEnvironmentPrivilege	2952	svchost.exe
Token: SeChangeNotifyPrivilege	2952	svchost.exe
Token: SeRemoteShutdownPrivilege	2952	svchost.exe
Token: SeUndockPrivilege	2952	svchost.exe
Token: SeManageVolumePrivilege	2952	svchost.exe
Token: SeImpersonatePrivilege	2952	svchost.exe
Token: SeCreateGlobalPrivilege	2952	svchost.exe
Token: 33	2952	svchost.exe
Token: 34	2952	svchost.exe
Token: 35	2952	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2712 wrote to memory of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30
PID 2712 wrote to memory of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30
PID 2712 wrote to memory of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30
PID 2712 wrote to memory of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30
PID 2712 wrote to memory of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30
PID 2712 wrote to memory of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30
PID 2712 wrote to memory of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30
PID 2712 wrote to memory of 2952	2712	JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe	30
PID 2952 wrote to memory of 2768	2952	svchost.exe	31
PID 2952 wrote to memory of 2768	2952	svchost.exe	31
PID 2952 wrote to memory of 2768	2952	svchost.exe	31
PID 2952 wrote to memory of 2768	2952	svchost.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2f1a1badc1a79faf8a4a0431c263579b.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2952
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
memory/2712-0-0x0000000074D91000-0x0000000074D92000-memory.dmp

Filesize
4KB

Download
memory/2712-1-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2712-2-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2712-27-0x0000000074D90000-0x000000007533B000-memory.dmp

Filesize
5.7MB

Download
memory/2952-16-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-23-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-22-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-7-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-14-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-10-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-8-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-26-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-25-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-24-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2952-28-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2952-37-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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