7280847be808f2f89741e931900fc8836e9760b056e0cc192fe24fa8114439af

Analysis

max time kernel
173s
max time network
186s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 10:35

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General

Target

17990ef819b76de43eb19ee4889e4678.exe
Size

19KB
MD5

17990ef819b76de43eb19ee4889e4678
SHA1

4e0fc13a50ef08c6d60ac12ab168d745c1926307
SHA256

7280847be808f2f89741e931900fc8836e9760b056e0cc192fe24fa8114439af
SHA512

1eaf68a7706af74ea05457f1e16ae44b7d5adafeb563a8ec94ad48a6966d704f8f971f48bacec9c4a70bc76b8e0bac1918a368e0edebf3984de0ac9396c88517
SSDEEP

384:IQkBeLas8Qj7f0gsLgdWxXmUCiRNWWBEHVEoOyG6tL3N8XE44bWH:IQ6Iasr7Scd0mHfOyG6VNmL4g

Score

7^/10

persistence

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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	17990ef819b76de43eb19ee4889e4678.exe

Executes dropped EXE 1 IoCs

pid	Process
400	sysformat.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sysformat = "C:\\Windows\\system32\\sysformat.exe"	17990ef819b76de43eb19ee4889e4678.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sysformat = "C:\\Windows\\system32\\sysformat.exe"	sysformat.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\sysformat.exe	17990ef819b76de43eb19ee4889e4678.exe
File created	C:\Windows\SysWOW64\sysformat.exe	17990ef819b76de43eb19ee4889e4678.exe
File opened for modification	C:\Windows\SysWOW64\sysformat.exe	sysformat.exe
File created	C:\Windows\SysWOW64\sysformat.exe	sysformat.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	4984	17990ef819b76de43eb19ee4889e4678.exe
Token: SeDebugPrivilege	400	sysformat.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 400	4984	17990ef819b76de43eb19ee4889e4678.exe	91
PID 4984 wrote to memory of 400	4984	17990ef819b76de43eb19ee4889e4678.exe	91
PID 4984 wrote to memory of 400	4984	17990ef819b76de43eb19ee4889e4678.exe	91

C:\Users\Admin\AppData\Local\Temp\17990ef819b76de43eb19ee4889e4678.exe
"C:\Users\Admin\AppData\Local\Temp\17990ef819b76de43eb19ee4889e4678.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Windows\SysWOW64\sysformat.exe
  "C:\Windows\system32\sysformat.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  PID:400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\sysformat.exe

Filesize
19KB

MD5
17990ef819b76de43eb19ee4889e4678

SHA1
4e0fc13a50ef08c6d60ac12ab168d745c1926307

SHA256
7280847be808f2f89741e931900fc8836e9760b056e0cc192fe24fa8114439af

SHA512
1eaf68a7706af74ea05457f1e16ae44b7d5adafeb563a8ec94ad48a6966d704f8f971f48bacec9c4a70bc76b8e0bac1918a368e0edebf3984de0ac9396c88517

Download Submit
memory/400-11-0x0000000000400000-0x000000000040F39C-memory.dmp

Filesize
60KB

Download
memory/4984-0-0x0000000000400000-0x000000000040F39C-memory.dmp

Filesize
60KB

Download
memory/4984-10-0x0000000000400000-0x000000000040F39C-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads