c33e235028ce92f63762d4ea3c68980aef3c1cf99899bba3e7f5ec4409476d46

General

Target

ac5f0dcd478769e573281cf2d4b2da60N.exe
Size

59KB
MD5

ac5f0dcd478769e573281cf2d4b2da60
SHA1

3709476b1887e006653fab62a4ccbc092d080648
SHA256

c33e235028ce92f63762d4ea3c68980aef3c1cf99899bba3e7f5ec4409476d46
SHA512

f200e2f38c86fc56620fb6b8b5ea944d24e602792637ec72faa4d7b356e796d0abb2b93614640518b58fb25d69d708d64bb0a2b0dda95b1eb836ef402f24d463
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQ3:OeodiUO4p13b9HiIeoutuh1aQ3

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	ac5f0dcd478769e573281cf2d4b2da60N.exe

Executes dropped EXE 1 IoCs

pid	Process
3864	AhnSvc.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1904-0-0x0000000000E70000-0x0000000000E97000-memory.dmp	upx
behavioral2/files/0x0008000000023479-3.dat	upx
behavioral2/memory/3864-4-0x00000000009D0000-0x00000000009F7000-memory.dmp	upx
behavioral2/memory/1904-9-0x0000000000E70000-0x0000000000E97000-memory.dmp	upx
behavioral2/memory/3864-10-0x00000000009D0000-0x00000000009F7000-memory.dmp	upx
behavioral2/memory/3864-11-0x00000000009D0000-0x00000000009F7000-memory.dmp	upx

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"	ac5f0dcd478769e573281cf2d4b2da60N.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ac5f0dcd478769e573281cf2d4b2da60N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AhnSvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1904	ac5f0dcd478769e573281cf2d4b2da60N.exe
Token: SeDebugPrivilege	3864	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 3864	1904	ac5f0dcd478769e573281cf2d4b2da60N.exe	83
PID 1904 wrote to memory of 3864	1904	ac5f0dcd478769e573281cf2d4b2da60N.exe	83
PID 1904 wrote to memory of 3864	1904	ac5f0dcd478769e573281cf2d4b2da60N.exe	83
PID 1904 wrote to memory of 1488	1904	ac5f0dcd478769e573281cf2d4b2da60N.exe	85
PID 1904 wrote to memory of 1488	1904	ac5f0dcd478769e573281cf2d4b2da60N.exe	85
PID 1904 wrote to memory of 1488	1904	ac5f0dcd478769e573281cf2d4b2da60N.exe	85

C:\Users\Admin\AppData\Local\Temp\ac5f0dcd478769e573281cf2d4b2da60N.exe
"C:\Users\Admin\AppData\Local\Temp\ac5f0dcd478769e573281cf2d4b2da60N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1904
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\ac5f0dcd478769e573281cf2d4b2da60N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1488

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

Indicator Removal

1

T1070

File Deletion

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\AhnLab\AhnSvc.exe

Filesize
59KB

MD5
7b134d64bd79515d6cd48a0ece42d1cb

SHA1
36de88fd22c01ce65afbd49c6f19ed4a03812cde

SHA256
5bffd2633d84b9a01d518774f1b1908de0187d44d7fe2b1bb5db0eb5ca7fd41e

SHA512
6a5ea418db66cf9796ba09bf0813c06c55772516ecbfb15924189b82a9df6cadc87f6b4bb016a4630e4950c6b4f53596f315582fc8795b6bb12359f4dcad23eb

Download Submit
memory/1904-0-0x0000000000E70000-0x0000000000E97000-memory.dmp

Filesize
156KB

Download
memory/1904-9-0x0000000000E70000-0x0000000000E97000-memory.dmp

Filesize
156KB

Download
memory/3864-4-0x00000000009D0000-0x00000000009F7000-memory.dmp

Filesize
156KB

Download
memory/3864-10-0x00000000009D0000-0x00000000009F7000-memory.dmp

Filesize
156KB

Download
memory/3864-11-0x00000000009D0000-0x00000000009F7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads