7941b73b753797e4926d9df968f5e6b101dc23d7312569ae2af784262f532353

General

Target

jKPeSMhaBb.dll
Size

9.0MB
MD5

71de56304b7c5bf604a2c63c27fee89b
SHA1

84b63bc607afa5ed4401a618e896f5a511dbeb20
SHA256

7941b73b753797e4926d9df968f5e6b101dc23d7312569ae2af784262f532353
SHA512

ee7f465a235ec63163a4ac93e0b120daf7b1e66a11ef0046a87f9d90923760ea47882fc5eda5a1caf8814fc2e0e74cd769c9b88e0de7488701c9b9556edbf406

Score

9^/10

evasion themida trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral1/memory/1228-55-0x0000000002230000-0x00000000031DE000-memory.dmp	themida
behavioral1/memory/1228-56-0x0000000002230000-0x00000000031DE000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1392 1228 WerFault.exe rundll32.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

WerFault.exe

pid process

1392 WerFault.exe
1392 WerFault.exe
1392 WerFault.exe
1392 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1392 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 1392 WerFault.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

pid	pid_target	process	target process
1392	1228	WerFault.exe	rundll32.exe

pid	process
1392	WerFault.exe
1392	WerFault.exe
1392	WerFault.exe
1392	WerFault.exe

pid	process
1392	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1392	WerFault.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1312 wrote to memory of 1228	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 1228	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 1228	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 1228	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 1228	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 1228	1312	rundll32.exe	rundll32.exe
PID 1312 wrote to memory of 1228	1312	rundll32.exe	rundll32.exe
PID 1228 wrote to memory of 1392	1228	rundll32.exe	WerFault.exe
PID 1228 wrote to memory of 1392	1228	rundll32.exe	WerFault.exe
PID 1228 wrote to memory of 1392	1228	rundll32.exe	WerFault.exe
PID 1228 wrote to memory of 1392	1228	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jKPeSMhaBb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1312

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jKPeSMhaBb.dll,#1
2⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
PID:1228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1228 -s 308
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1392

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1228-54-0x0000000075D51000-0x0000000075D53000-memory.dmp

Filesize
8KB

Download
memory/1228-55-0x0000000002230000-0x00000000031DE000-memory.dmp

Filesize
15.7MB

Download
memory/1228-56-0x0000000002230000-0x00000000031DE000-memory.dmp

Filesize
15.7MB

Download
memory/1392-58-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads