darkcomet | f4135f6b427e6836503797ff2f441a4f7ad343ae264396b4a4cd6bf7b295189c

General

Target

512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Size

283KB
MD5

512665db21883175c7a9af2fbb38a839
SHA1

997ebd10c77def607dfc4a6510578f2d9a5904ce
SHA256

f4135f6b427e6836503797ff2f441a4f7ad343ae264396b4a4cd6bf7b295189c
SHA512

7095b0705a7c6038965e96b96769af8cbe4f065c3146d288e1dd0c3d240dbac827e0192fc49513666316e10af73f73174424eda006bc70ac99122192e0852971
SSDEEP

6144:8cNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PlR:8cWkbgTYWnYnt/IDYhPn

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:888

Mutex

DC_MUTEX-WHLS1HP

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
gGRRYlfxUJpz
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

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"	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

Processes:

512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts 512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	512665db21883175c7a9af2fbb38a839_JaffaCakes118.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

Processes:

512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1488 msdcsc.exe

pid	process
1488	msdcsc.exe

UPX packed file 14 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4288-0-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/4288-65-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-66-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-67-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-68-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-69-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-71-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-72-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-73-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-74-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-75-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-76-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/1488-77-0x0000000000400000-0x00000000004C7000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

512665db21883175c7a9af2fbb38a839_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeSecurityPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeBackupPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeRestorePrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeShutdownPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeDebugPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeUndockPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: 33	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: 34	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: 35	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: 36	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1488	msdcsc.exe
Token: SeSecurityPrivilege	1488	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1488	msdcsc.exe
Token: SeLoadDriverPrivilege	1488	msdcsc.exe
Token: SeSystemProfilePrivilege	1488	msdcsc.exe
Token: SeSystemtimePrivilege	1488	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1488	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1488	msdcsc.exe
Token: SeCreatePagefilePrivilege	1488	msdcsc.exe
Token: SeBackupPrivilege	1488	msdcsc.exe
Token: SeRestorePrivilege	1488	msdcsc.exe
Token: SeShutdownPrivilege	1488	msdcsc.exe
Token: SeDebugPrivilege	1488	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1488	msdcsc.exe
Token: SeChangeNotifyPrivilege	1488	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1488	msdcsc.exe
Token: SeUndockPrivilege	1488	msdcsc.exe
Token: SeManageVolumePrivilege	1488	msdcsc.exe
Token: SeImpersonatePrivilege	1488	msdcsc.exe
Token: SeCreateGlobalPrivilege	1488	msdcsc.exe
Token: 33	1488	msdcsc.exe
Token: 34	1488	msdcsc.exe
Token: 35	1488	msdcsc.exe
Token: 36	1488	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1488 msdcsc.exe

pid	process
1488	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe

description	pid	process	target process
PID 4288 wrote to memory of 1488	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe	msdcsc.exe
PID 4288 wrote to memory of 1488	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe	msdcsc.exe
PID 4288 wrote to memory of 1488	4288	512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\512665db21883175c7a9af2fbb38a839_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4288

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1488

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 --field-trial-handle=4336,i,17096020621006928097,15544233752327415349,262144 --variations-seed-version --mojo-platform-channel-handle=3596 /prefetch:8
1⤵
PID:2212

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
283KB

MD5
512665db21883175c7a9af2fbb38a839

SHA1
997ebd10c77def607dfc4a6510578f2d9a5904ce

SHA256
f4135f6b427e6836503797ff2f441a4f7ad343ae264396b4a4cd6bf7b295189c

SHA512
7095b0705a7c6038965e96b96769af8cbe4f065c3146d288e1dd0c3d240dbac827e0192fc49513666316e10af73f73174424eda006bc70ac99122192e0852971

Download Submit
memory/1488-74-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-71-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-63-0x0000000002090000-0x0000000002091000-memory.dmp

Filesize
4KB

Download
memory/1488-77-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-66-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-67-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-76-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-69-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-68-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-72-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-73-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1488-75-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/4288-0-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/4288-1-0x00000000023E0000-0x00000000023E1000-memory.dmp

Filesize
4KB

Download
memory/4288-65-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads