darkcomet | ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d

General

Target

ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe
Size

534KB
MD5

8093d7e4d74c549ee8c185c655f47e65
SHA1

4cefa845db22a23f0cb5e1b99ad8a1bcd5795ccc
SHA256

ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d
SHA512

954e90d6b857e8cac84137e12ddb9d775ece68eabbebdea5a5651a172b7a52f76443ba0cbeef980161839b2192e0be9e0903808d0544e49b92ee02ce2cbb474d
SSDEEP

12288:Hhqmauq42dSMeIdh07uRCxBzh9pVnfLSPijpmcUHlMSn8qcpuT:HhqmauqW8tAxBLdjpmoI08

Score

10^/10

darkcomet hf evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

cyber-dos.no-ip.org:1337

Mutex

DC_MUTEX-EYQES59

Attributes

InstallPath
java32\java.exe
gencode
vP5N1dBnHx0W
install
true
offline_keylogger
true
persistence
true
reg_key
java

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

T1004

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\java32\\java.exe"	vbc.exe

Executes dropped EXE 1 IoCs

Processes:

java.exe

pid process

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

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1548 attrib.exe
1680 attrib.exe

pid	process
928	java.exe

pid	process
1548	attrib.exe
1680	attrib.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/664-57-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/664-59-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/664-60-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/664-62-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/664-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/664-65-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/664-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Loads dropped DLL 1 IoCs

Processes:

vbc.exe

pid process

664 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
664	vbc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exeae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\java = "C:\\Windows\\system32\\java32\\java.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindosU = "C:\\Users\\Admin\\AppData\\Local\\Temp\\WindosU.exe"	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe

Drops autorun.inf file 1 TTPs 4 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

Processes:

ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe

description	ioc	process
File opened for modification	C:\autorun.inf	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe
File created	D:\autorun.inf	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe
File opened for modification	D:\autorun.inf	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe
File created	C:\autorun.inf	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe

Drops file in System32 directory 3 IoCs

Processes:

vbc.exe

description	ioc	process
File created	C:\Windows\SysWOW64\java32\java.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\java32\java.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\java32\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe

description pid process target process

PID 572 set thread context of 664 572 ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe vbc.exe

description	pid	process	target process
PID 572 set thread context of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe

Drops file in Windows directory 2 IoCs

Processes:

attrib.exeattrib.exe

description	ioc	process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe	attrib.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

vbc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	664	vbc.exe
Token: SeSecurityPrivilege	664	vbc.exe
Token: SeTakeOwnershipPrivilege	664	vbc.exe
Token: SeLoadDriverPrivilege	664	vbc.exe
Token: SeSystemProfilePrivilege	664	vbc.exe
Token: SeSystemtimePrivilege	664	vbc.exe
Token: SeProfSingleProcessPrivilege	664	vbc.exe
Token: SeIncBasePriorityPrivilege	664	vbc.exe
Token: SeCreatePagefilePrivilege	664	vbc.exe
Token: SeBackupPrivilege	664	vbc.exe
Token: SeRestorePrivilege	664	vbc.exe
Token: SeShutdownPrivilege	664	vbc.exe
Token: SeDebugPrivilege	664	vbc.exe
Token: SeSystemEnvironmentPrivilege	664	vbc.exe
Token: SeChangeNotifyPrivilege	664	vbc.exe
Token: SeRemoteShutdownPrivilege	664	vbc.exe
Token: SeUndockPrivilege	664	vbc.exe
Token: SeManageVolumePrivilege	664	vbc.exe
Token: SeImpersonatePrivilege	664	vbc.exe
Token: SeCreateGlobalPrivilege	664	vbc.exe
Token: 33	664	vbc.exe
Token: 34	664	vbc.exe
Token: 35	664	vbc.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exevbc.execmd.execmd.exe

description	pid	process	target process
PID 572 wrote to memory of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe
PID 572 wrote to memory of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe
PID 572 wrote to memory of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe
PID 572 wrote to memory of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe
PID 572 wrote to memory of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe
PID 572 wrote to memory of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe
PID 572 wrote to memory of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe
PID 572 wrote to memory of 664	572	ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe	vbc.exe
PID 664 wrote to memory of 1280	664	vbc.exe	cmd.exe
PID 664 wrote to memory of 1280	664	vbc.exe	cmd.exe
PID 664 wrote to memory of 1280	664	vbc.exe	cmd.exe
PID 664 wrote to memory of 1280	664	vbc.exe	cmd.exe
PID 664 wrote to memory of 776	664	vbc.exe	cmd.exe
PID 664 wrote to memory of 776	664	vbc.exe	cmd.exe
PID 664 wrote to memory of 776	664	vbc.exe	cmd.exe
PID 664 wrote to memory of 776	664	vbc.exe	cmd.exe
PID 776 wrote to memory of 1680	776	cmd.exe	attrib.exe
PID 776 wrote to memory of 1680	776	cmd.exe	attrib.exe
PID 776 wrote to memory of 1680	776	cmd.exe	attrib.exe
PID 776 wrote to memory of 1680	776	cmd.exe	attrib.exe
PID 1280 wrote to memory of 1548	1280	cmd.exe	attrib.exe
PID 1280 wrote to memory of 1548	1280	cmd.exe	attrib.exe
PID 1280 wrote to memory of 1548	1280	cmd.exe	attrib.exe
PID 1280 wrote to memory of 1548	1280	cmd.exe	attrib.exe
PID 664 wrote to memory of 928	664	vbc.exe	java.exe
PID 664 wrote to memory of 928	664	vbc.exe	java.exe
PID 664 wrote to memory of 928	664	vbc.exe	java.exe
PID 664 wrote to memory of 928	664	vbc.exe	java.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1548 attrib.exe
1680 attrib.exe

pid	process
1548	attrib.exe
1680	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe
"C:\Users\Admin\AppData\Local\Temp\ae5aa015798898802e277ff25fa8678f688f9df22ad9d15d849409d3d83b925d.exe"
1⤵
- Adds Run key to start application
- Drops autorun.inf file
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:572

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
2⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:664

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:1280

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" +s +h
4⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:1548

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:776

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
4⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:1680

C:\Windows\SysWOW64\java32\java.exe
"C:\Windows\system32\java32\java.exe"
3⤵
- Executes dropped EXE
PID:928

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1

T1091

Execution

Scripting

1

T1064

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\java32\java.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Windows\SysWOW64\java32\java.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Windows\SysWOW64\java32\java.exe
Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/572-55-0x0000000074AD0000-0x000000007507B000-memory.dmp

Filesize
5.7MB

Download
memory/572-75-0x0000000074AD0000-0x000000007507B000-memory.dmp

Filesize
5.7MB

Download
memory/572-54-0x0000000075C11000-0x0000000075C13000-memory.dmp

Filesize
8KB

Download
memory/664-61-0x00000000004B57A0-mapping.dmp

Download
memory/664-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/664-65-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/664-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/664-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/664-56-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/664-57-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/664-60-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/664-59-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/776-67-0x0000000000000000-mapping.dmp

Download
memory/928-72-0x0000000000000000-mapping.dmp

Download
memory/1280-66-0x0000000000000000-mapping.dmp

Download
memory/1548-70-0x0000000000000000-mapping.dmp

Download
memory/1680-69-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads