f018a0129bca59202be6b3c9c2023a6bda8e5472b80ce107dab2202740471aad

Analysis

max time kernel
89s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 21:15

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General

Target

902c23896b6595110015a4d477606d93.exe
Size

19KB
MD5

902c23896b6595110015a4d477606d93
SHA1

ecd9439c115055d04a34c5bce3359bf94d5cb5cc
SHA256

f018a0129bca59202be6b3c9c2023a6bda8e5472b80ce107dab2202740471aad
SHA512

d913cbe3c80a22bf7b7fe9dc1807fa1a101a4b85503fcebcb9c679d992ddf18a0182e01db5139702b3acea7c08778390a962dd10c261b304a94f99ece9f61e68
SSDEEP

384:eC92H43F+eogcQoHLVe4Cyb/41Lz7BFRKyojbUHm9BFBFVD68P94vLtpNrnPCA7:fBcetoHh1C0UH1ejIGrFBFVWk9oNnKA7

Score

7^/10

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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	902c23896b6595110015a4d477606d93.exe

Executes dropped EXE 1 IoCs

pid	Process
820	dfrgsrv.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dfrgsrv.exe	902c23896b6595110015a4d477606d93.exe
File opened for modification	C:\Windows\SysWOW64\dfrgsrv.exe	902c23896b6595110015a4d477606d93.exe
File created	C:\Windows\SysWOW64\ld4F29.tmp	dfrgsrv.exe
File opened for modification	C:\Windows\SysWOW64\ld4F29.tmp	dfrgsrv.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
820	dfrgsrv.exe
820	dfrgsrv.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	224	902c23896b6595110015a4d477606d93.exe
Token: SeIncBasePriorityPrivilege	224	902c23896b6595110015a4d477606d93.exe
Token: SeDebugPrivilege	820	dfrgsrv.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 820	224	902c23896b6595110015a4d477606d93.exe	85
PID 224 wrote to memory of 820	224	902c23896b6595110015a4d477606d93.exe	85
PID 224 wrote to memory of 820	224	902c23896b6595110015a4d477606d93.exe	85
PID 820 wrote to memory of 612	820	dfrgsrv.exe	4
PID 224 wrote to memory of 3560	224	902c23896b6595110015a4d477606d93.exe	87
PID 224 wrote to memory of 3560	224	902c23896b6595110015a4d477606d93.exe	87
PID 224 wrote to memory of 3560	224	902c23896b6595110015a4d477606d93.exe	87

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:612

C:\Users\Admin\AppData\Local\Temp\902c23896b6595110015a4d477606d93.exe
"C:\Users\Admin\AppData\Local\Temp\902c23896b6595110015a4d477606d93.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\SysWOW64\dfrgsrv.exe
  C:\Windows\system32\dfrgsrv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\902C23~1.EXE > nul
  2⤵
  PID:3560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\dfrgsrv.exe

Filesize
14KB

MD5
59e3f1a738d267376fdb2aed5332b565

SHA1
e4a0497e5242a5e339a206b2a86fe8c365628ac6

SHA256
d6e267f58e2a4e5fed4b02c6de63c520a464541e6fa941c0ee694911bf00951b

SHA512
81dcccb4bc2a1812e824fbe77fd934ceaa646f48cccb5ba3cde3d6d4dc3c4d73e772724e288318b1be42edec238d7dd157081b0047e089a7356ed074beda3adf

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