darkcomet | ce6c774bcbcb08ee2e11a539a45e70afc1282d04970d52b42020d8c761173b49

General

Target

eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe
Size

350KB
MD5

220fd88ed61a81dd7238c8385fc8c5f7
SHA1

b4c6ea98e705912f38816bd4aff085871b1bae80
SHA256

eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816
SHA512

355aad3cc89c3d6acaf53a7091903d6b0b4092e1f4c7bc6c41255a7aafce00d3807ddad4b5c027a0437938e17278f7a8d591a085b4e014fff8d6165fdeb6838f
SSDEEP

6144:hSncRldcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37wxM:Q4jcW7KEZlPzCy37

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

sussynv83dj893.duckdns.org:1604

Mutex

DC_MUTEX-RU83HNV

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
MFz6heXQQ4jP
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:

ASDKODGS.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"	ASDKODGS.EXE

Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

492 attrib.exe
2732 attrib.exe

pid	process
492	attrib.exe
2732	attrib.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exeASDKODGS.EXE

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	ASDKODGS.EXE

Executes dropped EXE 3 IoCs

Processes:

ASDKODGS.EXEZBYTE2.0.EXEmsdcsc.exe

pid process

4632 ASDKODGS.EXE
2176 ZBYTE2.0.EXE
3856 msdcsc.exe

pid	process
4632	ASDKODGS.EXE
2176	ZBYTE2.0.EXE
3856	msdcsc.exe

UPX packed file 10 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\ASDKODGS.EXE	upx
behavioral2/memory/4632-11-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3856-38-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4632-41-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3856-45-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3856-52-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3856-55-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3856-58-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3856-60-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3856-62-0x0000000000400000-0x00000000004B7000-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:

ASDKODGS.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ASDKODGS.EXE

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

3856 msdcsc.exe

pid	process
3856	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

ASDKODGS.EXEmsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4632	ASDKODGS.EXE
Token: SeSecurityPrivilege	4632	ASDKODGS.EXE
Token: SeTakeOwnershipPrivilege	4632	ASDKODGS.EXE
Token: SeLoadDriverPrivilege	4632	ASDKODGS.EXE
Token: SeSystemProfilePrivilege	4632	ASDKODGS.EXE
Token: SeSystemtimePrivilege	4632	ASDKODGS.EXE
Token: SeProfSingleProcessPrivilege	4632	ASDKODGS.EXE
Token: SeIncBasePriorityPrivilege	4632	ASDKODGS.EXE
Token: SeCreatePagefilePrivilege	4632	ASDKODGS.EXE
Token: SeBackupPrivilege	4632	ASDKODGS.EXE
Token: SeRestorePrivilege	4632	ASDKODGS.EXE
Token: SeShutdownPrivilege	4632	ASDKODGS.EXE
Token: SeDebugPrivilege	4632	ASDKODGS.EXE
Token: SeSystemEnvironmentPrivilege	4632	ASDKODGS.EXE
Token: SeChangeNotifyPrivilege	4632	ASDKODGS.EXE
Token: SeRemoteShutdownPrivilege	4632	ASDKODGS.EXE
Token: SeUndockPrivilege	4632	ASDKODGS.EXE
Token: SeManageVolumePrivilege	4632	ASDKODGS.EXE
Token: SeImpersonatePrivilege	4632	ASDKODGS.EXE
Token: SeCreateGlobalPrivilege	4632	ASDKODGS.EXE
Token: 33	4632	ASDKODGS.EXE
Token: 34	4632	ASDKODGS.EXE
Token: 35	4632	ASDKODGS.EXE
Token: 36	4632	ASDKODGS.EXE
Token: SeIncreaseQuotaPrivilege	3856	msdcsc.exe
Token: SeSecurityPrivilege	3856	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3856	msdcsc.exe
Token: SeLoadDriverPrivilege	3856	msdcsc.exe
Token: SeSystemProfilePrivilege	3856	msdcsc.exe
Token: SeSystemtimePrivilege	3856	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3856	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3856	msdcsc.exe
Token: SeCreatePagefilePrivilege	3856	msdcsc.exe
Token: SeBackupPrivilege	3856	msdcsc.exe
Token: SeRestorePrivilege	3856	msdcsc.exe
Token: SeShutdownPrivilege	3856	msdcsc.exe
Token: SeDebugPrivilege	3856	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3856	msdcsc.exe
Token: SeChangeNotifyPrivilege	3856	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3856	msdcsc.exe
Token: SeUndockPrivilege	3856	msdcsc.exe
Token: SeManageVolumePrivilege	3856	msdcsc.exe
Token: SeImpersonatePrivilege	3856	msdcsc.exe
Token: SeCreateGlobalPrivilege	3856	msdcsc.exe
Token: 33	3856	msdcsc.exe
Token: 34	3856	msdcsc.exe
Token: 35	3856	msdcsc.exe
Token: 36	3856	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3856 msdcsc.exe

pid	process
3856	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exeASDKODGS.EXEcmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 4776 wrote to memory of 4632	4776	eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe	ASDKODGS.EXE
PID 4776 wrote to memory of 4632	4776	eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe	ASDKODGS.EXE
PID 4776 wrote to memory of 4632	4776	eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe	ASDKODGS.EXE
PID 4776 wrote to memory of 2176	4776	eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe	ZBYTE2.0.EXE
PID 4776 wrote to memory of 2176	4776	eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe	ZBYTE2.0.EXE
PID 4776 wrote to memory of 2176	4776	eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe	ZBYTE2.0.EXE
PID 4632 wrote to memory of 2508	4632	ASDKODGS.EXE	cmd.exe
PID 4632 wrote to memory of 2508	4632	ASDKODGS.EXE	cmd.exe
PID 4632 wrote to memory of 2508	4632	ASDKODGS.EXE	cmd.exe
PID 4632 wrote to memory of 3196	4632	ASDKODGS.EXE	cmd.exe
PID 4632 wrote to memory of 3196	4632	ASDKODGS.EXE	cmd.exe
PID 4632 wrote to memory of 3196	4632	ASDKODGS.EXE	cmd.exe
PID 4632 wrote to memory of 3856	4632	ASDKODGS.EXE	msdcsc.exe
PID 4632 wrote to memory of 3856	4632	ASDKODGS.EXE	msdcsc.exe
PID 4632 wrote to memory of 3856	4632	ASDKODGS.EXE	msdcsc.exe
PID 2508 wrote to memory of 492	2508	cmd.exe	attrib.exe
PID 2508 wrote to memory of 492	2508	cmd.exe	attrib.exe
PID 2508 wrote to memory of 492	2508	cmd.exe	attrib.exe
PID 3196 wrote to memory of 2732	3196	cmd.exe	attrib.exe
PID 3196 wrote to memory of 2732	3196	cmd.exe	attrib.exe
PID 3196 wrote to memory of 2732	3196	cmd.exe	attrib.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe
PID 3856 wrote to memory of 3360	3856	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

492 attrib.exe
2732 attrib.exe

pid	process
492	attrib.exe
2732	attrib.exe

C:\Users\Admin\AppData\Local\Temp\eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe
"C:\Users\Admin\AppData\Local\Temp\eddb245a5dc0d8f70ffb66c033cbaa38ea4639d900739c5580bc37d86f258816.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4776

C:\Users\Admin\AppData\Local\Temp\ASDKODGS.EXE
"C:\Users\Admin\AppData\Local\Temp\ASDKODGS.EXE"
2⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4632

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ASDKODGS.EXE" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:2508

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\ASDKODGS.EXE" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:492

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:3196

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
4⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2732

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3856

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:3360

C:\Users\Admin\AppData\Local\Temp\ZBYTE2.0.EXE
"C:\Users\Admin\AppData\Local\Temp\ZBYTE2.0.EXE"
2⤵
- Executes dropped EXE
PID:2176

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 --mojo-platform-channel-handle=4032 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:2448

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

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

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\AppData\Local\Temp\ASDKODGS.EXE
Filesize
251KB

MD5
0055ec3943749262735d79fcb4f04119

SHA1
b2c2dce19536c945785534f9fa4b5062ec43d541

SHA256
85bfcf8f009f442c997e9aa5ddb9430fd8e55b98c1c6108e248d9aa901f15c0b

SHA512
72b1873565f9fe8c8ae273df2805f2f1a126581f67bdead56c6818637c9026d6ff7f36bc4280de58b18e9670b209006db404ee7122cd5fd830e6464590f3b807

Download Submit
C:\Users\Admin\AppData\Local\Temp\ZBYTE2.0.EXE
Filesize
46KB

MD5
fc90c2fb06b099a072bd23f4722c591d

SHA1
69c2f9af2391b3311ce344a922ac650b0f3456b9

SHA256
e0df4445f3486b15b57da921ddc15b3137a5f2eb035f34130bc51f6be16d747e

SHA512
c3e87df8217d421abe951492809c7a89a5aaae341242c03428731362cb4907801e21da4bc6271d455ca7280131c59f2cb0137b829556d9c2f2a944be471cd619

Download Submit
memory/2176-51-0x0000000005730000-0x0000000005740000-memory.dmp

Filesize
64KB

Download
memory/2176-47-0x00000000056D0000-0x00000000056DA000-memory.dmp

Filesize
40KB

Download
memory/2176-36-0x0000000073150000-0x0000000073900000-memory.dmp

Filesize
7.7MB

Download
memory/2176-44-0x0000000005800000-0x0000000005892000-memory.dmp

Filesize
584KB

Download
memory/2176-56-0x0000000005730000-0x0000000005740000-memory.dmp

Filesize
64KB

Download
memory/2176-40-0x0000000000CC0000-0x0000000000CD4000-memory.dmp

Filesize
80KB

Download
memory/2176-53-0x0000000005730000-0x0000000005740000-memory.dmp

Filesize
64KB

Download
memory/2176-42-0x0000000005760000-0x00000000057FC000-memory.dmp

Filesize
624KB

Download
memory/2176-43-0x0000000005DB0000-0x0000000006354000-memory.dmp

Filesize
5.6MB

Download
memory/2176-49-0x0000000073150000-0x0000000073900000-memory.dmp

Filesize
7.7MB

Download
memory/2176-46-0x0000000005730000-0x0000000005740000-memory.dmp

Filesize
64KB

Download
memory/2176-48-0x0000000005A10000-0x0000000005A66000-memory.dmp

Filesize
344KB

Download
memory/3360-39-0x0000000000EA0000-0x0000000000EA1000-memory.dmp

Filesize
4KB

Download
memory/3856-58-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3856-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3856-52-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3856-55-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3856-38-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3856-45-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3856-60-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3856-37-0x00000000009E0000-0x00000000009E1000-memory.dmp

Filesize
4KB

Download
memory/4632-23-0x0000000002500000-0x0000000002501000-memory.dmp

Filesize
4KB

Download
memory/4632-11-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4632-41-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads