83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944

General

Target

83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe
Size

59KB
MD5

10a4c7d1c16bad34afdf5ead9c3d51e0
SHA1

06716c6e260109af681c929e219d782c5338ea63
SHA256

83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944
SHA512

30a3879d9e9e19c099c642727cf7c0dd04183c59761373ff3156c24764f29b04636165650fdecca6c02cfda5b86e807e98cf7830c73cc0cc90dcf5e2083f98f0
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQE:OeodiUO4p13b9HiIeoutuh1aQE

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe

Executes dropped EXE 1 IoCs

pid	Process
2460	AhnSvc.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1296-0-0x0000000000320000-0x0000000000347000-memory.dmp	upx
behavioral2/files/0x0007000000023457-3.dat	upx
behavioral2/memory/2460-4-0x0000000000110000-0x0000000000137000-memory.dmp	upx
behavioral2/memory/1296-9-0x0000000000320000-0x0000000000347000-memory.dmp	upx
behavioral2/memory/2460-10-0x0000000000110000-0x0000000000137000-memory.dmp	upx
behavioral2/memory/2460-11-0x0000000000110000-0x0000000000137000-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"	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.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	AhnSvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1296	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe
Token: SeDebugPrivilege	2460	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 2460	1296	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe	82
PID 1296 wrote to memory of 2460	1296	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe	82
PID 1296 wrote to memory of 2460	1296	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe	82
PID 1296 wrote to memory of 4636	1296	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe	83
PID 1296 wrote to memory of 4636	1296	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe	83
PID 1296 wrote to memory of 4636	1296	83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe	83

C:\Users\Admin\AppData\Local\Temp\83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe
"C:\Users\Admin\AppData\Local\Temp\83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.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:1296
- 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:2460
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\83ccbd53f810f2da61158db7a08e93dead70c639a086c2e41d389d58b2a9f944N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4636

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
3428d5a10ab31a1e71b551136d53b908

SHA1
c0870766fed5525560fd96d3925adbfd5a5e0f66

SHA256
2a41153cb6e507fc689652ce5c09b0dcd979452839450283c81b09e0083be80f

SHA512
c56351967587e17889efc591b92c6560839411a0f1e02ad8bcedd8b064a6300bbda8a297257f3aeb89cb6da89638bad326b5dbd80035c88db94ff4f66f43e005

Download Submit
memory/1296-0-0x0000000000320000-0x0000000000347000-memory.dmp

Filesize
156KB

Download
memory/1296-9-0x0000000000320000-0x0000000000347000-memory.dmp

Filesize
156KB

Download
memory/2460-4-0x0000000000110000-0x0000000000137000-memory.dmp

Filesize
156KB

Download
memory/2460-10-0x0000000000110000-0x0000000000137000-memory.dmp

Filesize
156KB

Download
memory/2460-11-0x0000000000110000-0x0000000000137000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads