darkcomet | 4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01

Analysis

max time kernel
120s
max time network
18s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 02:40

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General

Target

4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
Size

589KB
MD5

b345f448f01bd76ae15da77e85fb7440
SHA1

ebc2652874a10fabb92b4a2ca15b220f7187e943
SHA256

4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01
SHA512

97a8c4a976a06e2d92a5ebb7a9d2e29ef0008abbc53c5a311f47f9e1f2a2d2cfd41bb56994adb6465e98dc44b1ffee302f4f5b3f9b04c1d9d81f5014e2e8c806
SSDEEP

12288:9ffLtEIQIu7k5sscLsD5iZqHyscNExmj1NT5BzYQR8NxOz8Y5oST:9fTOIQIu7k5DzvLxm5Bl8sD

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

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	mcsft.exe

Executes dropped EXE 3 IoCs

pid	Process
2840	mcsft.exe
2748	mcsft.exe
2608	mcsft.exe

Loads dropped DLL 7 IoCs

pid	Process
2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
2840	mcsft.exe
2840	mcsft.exe

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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoft = "C:\\Users\\Admin\\AppData\\Roaming\\mcsft.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2840 set thread context of 2748	2840	mcsft.exe	35
PID 2840 set thread context of 2608	2840	mcsft.exe	36

UPX packed file 32 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2316-0-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/files/0x0009000000015ed2-27.dat	upx
behavioral1/memory/2840-48-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/2316-47-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/2748-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2608-68-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2748-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-67-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/2748-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2608-65-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2748-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2608-60-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2748-75-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-76-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2608-78-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2748-79-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-81-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-83-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-85-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-87-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-89-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-91-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-93-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-95-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2748-97-0x0000000000400000-0x00000000004B5000-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 6 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	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.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	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	mcsft.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	mcsft.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeDebugPrivilege	2608	mcsft.exe
Token: SeIncreaseQuotaPrivilege	2748	mcsft.exe
Token: SeSecurityPrivilege	2748	mcsft.exe
Token: SeTakeOwnershipPrivilege	2748	mcsft.exe
Token: SeLoadDriverPrivilege	2748	mcsft.exe
Token: SeSystemProfilePrivilege	2748	mcsft.exe
Token: SeSystemtimePrivilege	2748	mcsft.exe
Token: SeProfSingleProcessPrivilege	2748	mcsft.exe
Token: SeIncBasePriorityPrivilege	2748	mcsft.exe
Token: SeCreatePagefilePrivilege	2748	mcsft.exe
Token: SeBackupPrivilege	2748	mcsft.exe
Token: SeRestorePrivilege	2748	mcsft.exe
Token: SeShutdownPrivilege	2748	mcsft.exe
Token: SeDebugPrivilege	2748	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2748	mcsft.exe
Token: SeChangeNotifyPrivilege	2748	mcsft.exe
Token: SeRemoteShutdownPrivilege	2748	mcsft.exe
Token: SeUndockPrivilege	2748	mcsft.exe
Token: SeManageVolumePrivilege	2748	mcsft.exe
Token: SeImpersonatePrivilege	2748	mcsft.exe
Token: SeCreateGlobalPrivilege	2748	mcsft.exe
Token: 33	2748	mcsft.exe
Token: 34	2748	mcsft.exe
Token: 35	2748	mcsft.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
2840	mcsft.exe
2608	mcsft.exe
2748	mcsft.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2560	2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe	31
PID 2316 wrote to memory of 2560	2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe	31
PID 2316 wrote to memory of 2560	2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe	31
PID 2316 wrote to memory of 2560	2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe	31
PID 2560 wrote to memory of 2728	2560	cmd.exe	33
PID 2560 wrote to memory of 2728	2560	cmd.exe	33
PID 2560 wrote to memory of 2728	2560	cmd.exe	33
PID 2560 wrote to memory of 2728	2560	cmd.exe	33
PID 2316 wrote to memory of 2840	2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe	34
PID 2316 wrote to memory of 2840	2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe	34
PID 2316 wrote to memory of 2840	2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe	34
PID 2316 wrote to memory of 2840	2316	4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe	34
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2748	2840	mcsft.exe	35
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36
PID 2840 wrote to memory of 2608	2840	mcsft.exe	36

C:\Users\Admin\AppData\Local\Temp\4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe
"C:\Users\Admin\AppData\Local\Temp\4e1bc485497796ae11ae05700258ff3bcff5342e2ca9ebe3ea9f854387982a01N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\lXHWd.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2560
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoft" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\mcsft.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2728
- C:\Users\Admin\AppData\Roaming\mcsft.exe
  "C:\Users\Admin\AppData\Roaming\mcsft.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2840
- - C:\Users\Admin\AppData\Roaming\mcsft.exe
    C:\Users\Admin\AppData\Roaming\mcsft.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2748
- - C:\Users\Admin\AppData\Roaming\mcsft.exe
    C:\Users\Admin\AppData\Roaming\mcsft.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2608

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

Download Submit
C:\Users\Admin\AppData\Roaming\mcsft.exe

Filesize
589KB

MD5
eb7e73e6d507653eddf4b89124d7de15

SHA1
a4ab214de78f7f21d1055daaffcf916b6bc5c558

SHA256
33cd8a00e87d0beaf1247527c797d3b38a8e0c9dfd44a96b6b24e6368f5757fd

SHA512
cbb08f0f9fcd2459b94e94139c579b71f2a21649c2306643db32000748df65710fceb91b6bd8f1c790efc50e41cdf5279f37dedea76eb41a4d190eb4351d824a

Download Submit
memory/2316-44-0x0000000003980000-0x0000000003D6A000-memory.dmp

Filesize
3.9MB

Download
memory/2316-43-0x0000000003980000-0x0000000003D6A000-memory.dmp

Filesize
3.9MB

Download
memory/2316-42-0x0000000003980000-0x0000000003D6A000-memory.dmp

Filesize
3.9MB

Download
memory/2316-0-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2316-47-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2608-68-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2608-78-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2608-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2608-65-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2748-79-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-76-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-97-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-95-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-75-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-77-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-93-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-81-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-83-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-85-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-87-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-89-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2748-91-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-48-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2840-59-0x0000000002D30000-0x000000000311A000-memory.dmp

Filesize
3.9MB

Download
memory/2840-67-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads