3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23

General

Target

3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe
Size

59KB
MD5

7f1856d83f9bc9d1bf36c0d3ea29b50f
SHA1

6e90da468567c85c61d6633886ec2febf5ae497e
SHA256

3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23
SHA512

b15550a156f17cb38c44ed9c37ac1ac924e6f716af3f1b20cd9fbfd2850593269084133520f2b864c8d2dcf05fc68c66e2bd1445ec8900aa9012793c3e5e4194
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQC:OeodiUO4p13b9HiIeoutuh1aQC

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe

Executes dropped EXE 1 IoCs

pid	Process
3904	AhnSvc.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/840-0-0x0000000000880000-0x00000000008A7000-memory.dmp	upx
behavioral2/files/0x0009000000023426-3.dat	upx
behavioral2/memory/3904-4-0x0000000000BF0000-0x0000000000C17000-memory.dmp	upx
behavioral2/memory/840-9-0x0000000000880000-0x00000000008A7000-memory.dmp	upx
behavioral2/memory/3904-10-0x0000000000BF0000-0x0000000000C17000-memory.dmp	upx
behavioral2/memory/3904-11-0x0000000000BF0000-0x0000000000C17000-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"	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AhnSvc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	840	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe
Token: SeDebugPrivilege	3904	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 3904	840	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	83
PID 840 wrote to memory of 3904	840	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	83
PID 840 wrote to memory of 3904	840	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	83
PID 840 wrote to memory of 4784	840	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	85
PID 840 wrote to memory of 4784	840	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	85
PID 840 wrote to memory of 4784	840	3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe	85

C:\Users\Admin\AppData\Local\Temp\3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe
"C:\Users\Admin\AppData\Local\Temp\3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.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:840
- 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:3904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\3aa69ab31a6390042e2367af1ad6c03500eff6c975465d115d0b3efa59c31d23.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4784

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
9b535d907908b119ecae0b89a24c55e7

SHA1
2f15a70b884b69c900dac897158ba2e95e07753b

SHA256
dff9f79dc19261e5a2e613f8ff6f609406e3b94326422de8879ec302f4398f67

SHA512
51039598ffbffde3a06e1a4fde118bb7dad552732f47d76a8605c714d1c115306bddb309174f8d1dd05252143f3ca5e3cbf7c4cafc4ee3b90daf9bf26c5119a6

Download Submit
memory/840-0-0x0000000000880000-0x00000000008A7000-memory.dmp

Filesize
156KB

Download
memory/840-9-0x0000000000880000-0x00000000008A7000-memory.dmp

Filesize
156KB

Download
memory/3904-4-0x0000000000BF0000-0x0000000000C17000-memory.dmp

Filesize
156KB

Download
memory/3904-10-0x0000000000BF0000-0x0000000000C17000-memory.dmp

Filesize
156KB

Download
memory/3904-11-0x0000000000BF0000-0x0000000000C17000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads