82131599316a533b33f633530adbdfc279afcb3525e0d0629b2663f1f3d57bc7

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/01/2024, 11:20

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General

Target

7fb6176d1dbd57c1d55702874e97a83b.exe
Size

20KB
MD5

7fb6176d1dbd57c1d55702874e97a83b
SHA1

bcd205dee2eee7977a47ab7ec6d551a8fd308464
SHA256

82131599316a533b33f633530adbdfc279afcb3525e0d0629b2663f1f3d57bc7
SHA512

6f1881a5da6fd28b0815ef23ca833d2d879eb3589316e847b5634c3726662e337460059aa8189d91f7a122fa0fa5fa46973a7b26d6f6cff84240c7a812f6c478
SSDEEP

384:NVzX/WM4m6zGAttUDcwu2X1hBlhAK5fZAV0g3LyFoEJr1EN+DQc8rVAp9:3POm2ptmDcwuu/BlhNZVgv4WrVc9

Score

7^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2800	drvddll.exe

Loads dropped DLL 2 IoCs

pid	Process
2936	7fb6176d1dbd57c1d55702874e97a83b.exe
2936	7fb6176d1dbd57c1d55702874e97a83b.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2936-0-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/files/0x0009000000012287-4.dat	upx
behavioral1/memory/2936-5-0x0000000001FB0000-0x0000000001FC0000-memory.dmp	upx
behavioral1/memory/2936-11-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/memory/2800-15-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral1/memory/2936-17-0x0000000001FB0000-0x0000000001FC0000-memory.dmp	upx

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-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\drvddll.exe = "C:\\Windows\\system32\\drvddll.exe"	7fb6176d1dbd57c1d55702874e97a83b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\drvddll.exe = "C:\\Windows\\system32\\drvddll.exe"	drvddll.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\drvddll.exe	7fb6176d1dbd57c1d55702874e97a83b.exe
File created	C:\Windows\SysWOW64\drvddll.exe	7fb6176d1dbd57c1d55702874e97a83b.exe
File opened for modification	C:\Windows\SysWOW64\drvddll.exe	drvddll.exe
File created	C:\Windows\SysWOW64\drvddll.exe	drvddll.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	2936	7fb6176d1dbd57c1d55702874e97a83b.exe
Token: SeDebugPrivilege	2800	drvddll.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 2800	2936	7fb6176d1dbd57c1d55702874e97a83b.exe	28
PID 2936 wrote to memory of 2800	2936	7fb6176d1dbd57c1d55702874e97a83b.exe	28
PID 2936 wrote to memory of 2800	2936	7fb6176d1dbd57c1d55702874e97a83b.exe	28
PID 2936 wrote to memory of 2800	2936	7fb6176d1dbd57c1d55702874e97a83b.exe	28

C:\Users\Admin\AppData\Local\Temp\7fb6176d1dbd57c1d55702874e97a83b.exe
"C:\Users\Admin\AppData\Local\Temp\7fb6176d1dbd57c1d55702874e97a83b.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\SysWOW64\drvddll.exe
  "C:\Windows\system32\drvddll.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  PID:2800

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Windows\SysWOW64\drvddll.exe

Filesize
20KB

MD5
7fb6176d1dbd57c1d55702874e97a83b

SHA1
bcd205dee2eee7977a47ab7ec6d551a8fd308464

SHA256
82131599316a533b33f633530adbdfc279afcb3525e0d0629b2663f1f3d57bc7

SHA512
6f1881a5da6fd28b0815ef23ca833d2d879eb3589316e847b5634c3726662e337460059aa8189d91f7a122fa0fa5fa46973a7b26d6f6cff84240c7a812f6c478

Download Submit
memory/2800-15-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2936-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2936-5-0x0000000001FB0000-0x0000000001FC0000-memory.dmp

Filesize
64KB

Download
memory/2936-11-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2936-13-0x0000000001FB0000-0x0000000001FC0000-memory.dmp

Filesize
64KB

Download
memory/2936-17-0x0000000001FB0000-0x0000000001FC0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads