b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d

General

Target

b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe
Size

52KB
MD5

a187b357dc7f613b99278bb5d4a0688c
SHA1

16a87b53f256af464699dbc46a71e2c5c629cf04
SHA256

b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d
SHA512

7acb130b0681b68ee13f1113a0f85bbc4d85965843e6bddf2dac9df469c29ca6fb91a1f7d0500c4a6707c70cd4fd3e61040915bbb67ea00f8ec3e0b519628b34
SSDEEP

768:xLzrPIsVU080KYmz/IfhX5GaeimBYsHotogR8ARwre7zgVqMNWcRFD7DpDp:lvU080dGSh4Fb08ATzgV5WcF

Score

9^/10

Malware Config

Signatures

Detects executables built or packed with MPress PE compressor 7 IoCs

resource	yara_rule
behavioral2/memory/4748-0-0x0000000000400000-0x0000000000421000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4748-1-0x0000000000400000-0x0000000000421000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023261-4.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4748-8-0x0000000000400000-0x0000000000421000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3648-9-0x0000000000400000-0x0000000000421000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4748-10-0x0000000000400000-0x0000000000421000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3648-12-0x0000000000400000-0x0000000000421000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe

Executes dropped EXE 1 IoCs

pid	Process
3648	AhnSvc.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AhnUpadate = "\"C:\\ProgramData\\AhnLab\\AhnSvc.exe\" /run"	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4748	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe
Token: SeDebugPrivilege	3648	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4748 wrote to memory of 3648	4748	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe	97
PID 4748 wrote to memory of 3648	4748	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe	97
PID 4748 wrote to memory of 3648	4748	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe	97
PID 4748 wrote to memory of 4700	4748	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe	101
PID 4748 wrote to memory of 4700	4748	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe	101
PID 4748 wrote to memory of 4700	4748	b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe	101

C:\Users\Admin\AppData\Local\Temp\b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe
"C:\Users\Admin\AppData\Local\Temp\b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4748
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\b917042d4ba7223a41b187d4333c0cb194877ad85b02242871c94af8d3a2be4d.exe" >> NUL
  2⤵
  PID:4700

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4148 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:4616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\AhnLab\AhnSvc.exe

Filesize
52KB

MD5
875b63aca5e5aa4a5968cf4632c6e127

SHA1
ff761c96ba876a7af070abe520fedad4973865aa

SHA256
505396f82b91b78bd84aa126033c203984cd2fcdca54160614684b9c42c72741

SHA512
48e3e70f4c061fc9f9b403c8c157b0becba6f9cf65972c4b74eb9bcdcf46a8612cc0c60852f43238463715a9d388574efc1cbd033269215d4491931147cc121d

Download Submit
memory/3648-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3648-12-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4748-0-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4748-1-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4748-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4748-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads