xloader | b21e4b93bd73868c7dcd13384c55c8c9b562abd7d858497a45f8a804ff639866

General

Target
3820355aaf10b2e48f5936b545c9ee06.exe
Size 194KB
Sample210702-ptm34cd272
SHA256 b21e4b93bd73868c7dcd13384c55c8c9b562abd7d858497a45f8a804ff639866
MD5 3820355aaf10b2e48f5936b545c9ee06
SHA1 42c19326b98d92238c0d862e801bf37d943ada0b
SHA512 929f9dc8c2b3b27dd7aef0cf193cc8c5cfa033c18c7cd81c55d69832073bb867c9131cd3daf2a80f79e8da471e530a3c251d5b0a5cadedbadb09d61837d2bcea
MD5 SHA1 SHA512

Score

10^/10

xloader loader rat

Malware Config

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/1844-63-0x000000000044D090-mapping.dmp	xloader

Loads dropped DLL 1 IoCs

pid	Process
1208	3820355aaf10b2e48f5936b545c9ee06.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1208 set thread context of 1844	1208	3820355aaf10b2e48f5936b545c9ee06.exe	26

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1728	1844	WerFault.exe	26

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1728	WerFault.exe
1728	WerFault.exe
1728	WerFault.exe
1728	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1728	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	WerFault.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 1844	1208	3820355aaf10b2e48f5936b545c9ee06.exe	26
PID 1208 wrote to memory of 1844	1208	3820355aaf10b2e48f5936b545c9ee06.exe	26
PID 1208 wrote to memory of 1844	1208	3820355aaf10b2e48f5936b545c9ee06.exe	26
PID 1208 wrote to memory of 1844	1208	3820355aaf10b2e48f5936b545c9ee06.exe	26
PID 1208 wrote to memory of 1844	1208	3820355aaf10b2e48f5936b545c9ee06.exe	26
PID 1208 wrote to memory of 1844	1208	3820355aaf10b2e48f5936b545c9ee06.exe	26
PID 1208 wrote to memory of 1844	1208	3820355aaf10b2e48f5936b545c9ee06.exe	26
PID 1844 wrote to memory of 1728	1844	3820355aaf10b2e48f5936b545c9ee06.exe	27
PID 1844 wrote to memory of 1728	1844	3820355aaf10b2e48f5936b545c9ee06.exe	27
PID 1844 wrote to memory of 1728	1844	3820355aaf10b2e48f5936b545c9ee06.exe	27
PID 1844 wrote to memory of 1728	1844	3820355aaf10b2e48f5936b545c9ee06.exe	27

C:\Users\Admin\AppData\Local\Temp\3820355aaf10b2e48f5936b545c9ee06.exe
"C:\Users\Admin\AppData\Local\Temp\3820355aaf10b2e48f5936b545c9ee06.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\3820355aaf10b2e48f5936b545c9ee06.exe
  "C:\Users\Admin\AppData\Local\Temp\3820355aaf10b2e48f5936b545c9ee06.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1844
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1844 -s 36
    3⤵
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:1728

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1208-60-0x0000000076281000-0x0000000076283000-memory.dmp

Download

memory/1728-67-0x0000000000580000-0x0000000000581000-memory.dmp