433811102726bc15416ca338a2df55ec1daaf3f2565ee00d7f6484064746fb30

General

Target
XI3PV3M1PUUSEXXBH3LKN91TRFIN1166ZD2.dll
Size 8.4MB
Sample200828-4b8hfvf1pn
SHA256 433811102726bc15416ca338a2df55ec1daaf3f2565ee00d7f6484064746fb30
MD5 43e7413c02debc49385ca0821350af55
SHA1 8835996015ee50ac50e6302c6af3fb6582f9ab5e
SHA512 65945f240287cc6e43efd4dc93c58dfd2240f820a5d01bd4a869ebc48c5d8596809e8f16b12afdd18374021e8209794f1bd3e53ab2ad2d7bbacb2bca6d9e626a
MD5 SHA1 SHA512

Score

9^/10

evasion 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

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

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1724	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3988	1724	WerFault.exe	71

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = c4e63a17477dd601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe
3988	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeShutdownPrivilege	896	svchost.exe
Token: SeCreatePagefilePrivilege	896	svchost.exe
Token: SeRestorePrivilege	3988	WerFault.exe
Token: SeBackupPrivilege	3988	WerFault.exe
Token: SeDebugPrivilege	3988	WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 504 wrote to memory of 1724	504	rundll32.exe	71
PID 504 wrote to memory of 1724	504	rundll32.exe	71
PID 504 wrote to memory of 1724	504	rundll32.exe	71

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\XI3PV3M1PUUSEXXBH3LKN91TRFIN1166ZD2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:504
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\XI3PV3M1PUUSEXXBH3LKN91TRFIN1166ZD2.dll,#1
  2⤵
  - Checks BIOS information in registry
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:1724
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1724 -s 1044
    3⤵
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3988

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1724-1-0x00000000045E0000-0x0000000005813000-memory.dmp

Download

memory/3988-2-0x00000000043C0000-0x00000000043C1000-memory.dmp

Download

memory/3988-10-0x0000000004F40000-0x0000000004F41000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads