f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962

General

Target

f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe
Size

59KB
MD5

64a8bc0d7e623cb8abaf7a9ef8fd9f50
SHA1

93166b69f73806098295402b27cfd055e6554b4d
SHA256

f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962
SHA512

d88a237aeaa4a11b739233933b444f12c8a7b8c328974d155d064cedacfdc6cc7a7fd1e245d2c30f1bddf9b5dacb6fb0854539e8f0c6fd6aa1c511ea03b8985c
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQM:OeodiUO4p13b9HiIeoutuh1aQM

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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe

Executes dropped EXE 1 IoCs

pid	Process
5084	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"	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3464-0-0x0000000000D60000-0x0000000000D87000-memory.dmp	upx
behavioral2/files/0x0008000000023cb0-5.dat	upx
behavioral2/memory/5084-4-0x0000000000450000-0x0000000000477000-memory.dmp	upx
behavioral2/memory/3464-8-0x0000000000D60000-0x0000000000D87000-memory.dmp	upx
behavioral2/memory/5084-9-0x0000000000450000-0x0000000000477000-memory.dmp	upx
behavioral2/memory/5084-10-0x0000000000450000-0x0000000000477000-memory.dmp	upx

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	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.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	3464	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe
Token: SeDebugPrivilege	5084	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3464 wrote to memory of 5084	3464	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe	83
PID 3464 wrote to memory of 5084	3464	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe	83
PID 3464 wrote to memory of 5084	3464	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe	83
PID 3464 wrote to memory of 1032	3464	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe	87
PID 3464 wrote to memory of 1032	3464	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe	87
PID 3464 wrote to memory of 1032	3464	f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe	87

C:\Users\Admin\AppData\Local\Temp\f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe
"C:\Users\Admin\AppData\Local\Temp\f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.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:3464
- 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:5084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\f276bb4bdca026bfbd60a321cbd94aae603bf3b5d4fd20fedb84adc87e920962N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1032

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
65cea4c271d1b8f8b3f83239832efceb

SHA1
605d847acce0ee1f3680e14f3a92fa18f27c3362

SHA256
0cfe3a24a580c3f948b296540688e3697f9c46b120659aee68b18c8b15d9ff10

SHA512
0242e8d598ac0e5ecd023f7252b49cd7f2fe5b8aadb1f4a40026cf86e0e86d512973423dcff1370814ba7d558d991b6a40d82e0090dcb008c8163abf6e620316

Download Submit
memory/3464-0-0x0000000000D60000-0x0000000000D87000-memory.dmp

Filesize
156KB

Download
memory/3464-8-0x0000000000D60000-0x0000000000D87000-memory.dmp

Filesize
156KB

Download
memory/5084-4-0x0000000000450000-0x0000000000477000-memory.dmp

Filesize
156KB

Download
memory/5084-9-0x0000000000450000-0x0000000000477000-memory.dmp

Filesize
156KB

Download
memory/5084-10-0x0000000000450000-0x0000000000477000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads