f01a9af9cc4c3e91801a03c38e8e53d1a938458152332f438b16c11e28417f9b

Analysis

max time kernel
96s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2023 18:20

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General

Target

3408420691bd9fd95b69c5422250a840.exe
Size

18KB
MD5

3408420691bd9fd95b69c5422250a840
SHA1

3eb3b932ddbe7f1c166bccb7c132ea504fdcae41
SHA256

f01a9af9cc4c3e91801a03c38e8e53d1a938458152332f438b16c11e28417f9b
SHA512

4ebe1fc3ddcc2b905d2efb4574dc282d05ca99fc27bcbfc49331b85cfe458532666481cbfcc8e35de1087cf4b15d964cb6f9320c54023126e14467cdb8728466
SSDEEP

384:IQkBeLas8Qj7f0gsLgdWxXmUCiRNWWBEHVEoOyG6tL3N8XEZYgf:IQ6Iasr7Scd0mHfOyG6VNmw

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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	3408420691bd9fd95b69c5422250a840.exe

Executes dropped EXE 1 IoCs

pid	Process
4420	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-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sysformat = "C:\\Windows\\system32\\sysformat.exe"	3408420691bd9fd95b69c5422250a840.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\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	3408420691bd9fd95b69c5422250a840.exe
File created	C:\Windows\SysWOW64\sysformat.exe	3408420691bd9fd95b69c5422250a840.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	3988	3408420691bd9fd95b69c5422250a840.exe
Token: SeDebugPrivilege	4420	sysformat.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 4420	3988	3408420691bd9fd95b69c5422250a840.exe	87
PID 3988 wrote to memory of 4420	3988	3408420691bd9fd95b69c5422250a840.exe	87
PID 3988 wrote to memory of 4420	3988	3408420691bd9fd95b69c5422250a840.exe	87

C:\Users\Admin\AppData\Local\Temp\3408420691bd9fd95b69c5422250a840.exe
"C:\Users\Admin\AppData\Local\Temp\3408420691bd9fd95b69c5422250a840.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:3988
- 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:4420

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
18KB

MD5
3408420691bd9fd95b69c5422250a840

SHA1
3eb3b932ddbe7f1c166bccb7c132ea504fdcae41

SHA256
f01a9af9cc4c3e91801a03c38e8e53d1a938458152332f438b16c11e28417f9b

SHA512
4ebe1fc3ddcc2b905d2efb4574dc282d05ca99fc27bcbfc49331b85cfe458532666481cbfcc8e35de1087cf4b15d964cb6f9320c54023126e14467cdb8728466

Download Submit
memory/3988-0-0x0000000000400000-0x000000000040F39C-memory.dmp

Filesize
60KB

Download
memory/3988-10-0x0000000000400000-0x000000000040F39C-memory.dmp

Filesize
60KB

Download
memory/4420-11-0x0000000000400000-0x000000000040F39C-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads