a314527c483746231794e1c087529350230c74562a776f78319086f92e164418

General

Target

a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe
Size

460KB
MD5

7753b2e80f90c21024a33e9d6dd8804c
SHA1

3760b58f20b36c1945475458a0425de2edf682db
SHA256

a314527c483746231794e1c087529350230c74562a776f78319086f92e164418
SHA512

75e9f6d6e0456d6cf724a9c02d09aa9a6d6df7a478382051c57d39cbbc53af883b72fc44cdafda724fddb868ce01fee93e887afb99e319eaf21fafd53ac55733

Score

9^/10

evasion rezer0

Malware Config

Signatures

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1088-64-0x0000000002140000-0x000000000217A000-memory.dmp	rezer0

Looks for VMWare Tools registry key 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:

a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1744 1088 WerFault.exe a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

1744 WerFault.exe
1744 WerFault.exe
1744 WerFault.exe
1744 WerFault.exe
1744 WerFault.exe

pid	pid_target	process	target process
1744	1088	WerFault.exe	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe

pid	process
1744	WerFault.exe
1744	WerFault.exe
1744	WerFault.exe
1744	WerFault.exe
1744	WerFault.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	1088	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe
Token: SeDebugPrivilege	1744	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe

description	pid	process	target process
PID 1088 wrote to memory of 1744	1088	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe	WerFault.exe
PID 1088 wrote to memory of 1744	1088	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe	WerFault.exe
PID 1088 wrote to memory of 1744	1088	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe	WerFault.exe
PID 1088 wrote to memory of 1744	1088	a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe
"C:\Users\Admin\AppData\Local\Temp\a314527c483746231794e1c087529350230c74562a776f78319086f92e164418.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 916
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1744

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

2

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1088-60-0x0000000000040000-0x0000000000041000-memory.dmp

Filesize
4KB

Download
memory/1088-62-0x00000000071D0000-0x00000000071D1000-memory.dmp

Filesize
4KB

Download
memory/1088-63-0x0000000000270000-0x0000000000273000-memory.dmp

Filesize
12KB

Download
memory/1088-64-0x0000000002140000-0x000000000217A000-memory.dmp

Filesize
232KB

Download
memory/1744-65-0x0000000000000000-mapping.dmp

Download
memory/1744-66-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads