33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
17/04/2024, 03:21

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General

Target

33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe
Size

3.0MB
MD5

df7a1a3dda3ef1e2dbf4837052ec6a2a
SHA1

b54a7a9cbfebba7577ee212416c86768850511d0
SHA256

33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458
SHA512

19f0800d814c33ccc2f3dd548b0b4b92d81c97f29404d67e9962bd9a16545a63c9413520aa84f1d2aac8f822a6260b4326f05b8585c060aa3c41e778294acde8
SSDEEP

49152:ZcburWWS6FKmeAxAfovAF6RKcBQbx+29uWV9D489N:iburtzFKmeoAAvAF6RK/N91PM+N

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2548	NSUDOLC.exe

Loads dropped DLL 1 IoCs

pid	Process
1036	cmd.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\F:	33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
2492	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2548	NSUDOLC.exe
2548	NSUDOLC.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe
Token: SeDebugPrivilege	2492	taskkill.exe
Token: SeDebugPrivilege	2548	NSUDOLC.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1984	33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe
1984	33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 1036	1984	33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe	29
PID 1984 wrote to memory of 1036	1984	33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe	29
PID 1984 wrote to memory of 1036	1984	33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe	29
PID 1984 wrote to memory of 1036	1984	33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe	29
PID 1036 wrote to memory of 2492	1036	cmd.exe	31
PID 1036 wrote to memory of 2492	1036	cmd.exe	31
PID 1036 wrote to memory of 2492	1036	cmd.exe	31
PID 1036 wrote to memory of 2492	1036	cmd.exe	31
PID 1036 wrote to memory of 2548	1036	cmd.exe	32
PID 1036 wrote to memory of 2548	1036	cmd.exe	32
PID 1036 wrote to memory of 2548	1036	cmd.exe	32
PID 1036 wrote to memory of 2548	1036	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe
"C:\Users\Admin\AppData\Local\Temp\33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe"
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\temp.bat
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Windows\SysWOW64\taskkill.exe
    TASKKILL /F /PID 1984
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2492
- - C:\Users\Admin\AppData\Local\Temp\NSUDOLC.exe
    NSUDOLC /U:S /P:E C:\Users\Admin\AppData\Local\Temp\33dbfb9e703ad85d6be243cc09f6d473f5ffba72b135becc907f411d3b803458.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\temp.bat

Filesize
145B

MD5
b6b72ff84e197b22b11b346ec1f70f23

SHA1
139c08a52483928850b354c2f5b1274a2ad020ce

SHA256
4dfeef0e7da5fe70545c7ab9d1711a05e8abd590009072c02b113cfe669f9bb4

SHA512
e3733d9b75a607de1a5e88f999c7b123cf3c3dbc62c588e849bbec45d81f97a50bb37950af14a3a8af184865cb65fcdbbe62709b3ab5e2333ea7c576d805cc54

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\Users\Admin\AppData\Local\Temp\NSUDOLC.exe

Filesize
99KB

MD5
0ac3e9d59309f599403ac51615bfe41b

SHA1
9041c5562558cb58ac98bd18de3c0ce370a59e1f

SHA256
6d5e116c2af78b5585602d91bca3a436a0350630fc7c08412c0cafe55199547c

SHA512
e5de92202f4d3ecaff8bd65c99cbbc98c2deaafafe1620be7169d0fed467bfa11ce727fa78f686166758ee3df0b040a2643dbd5a46ee74cc679e647ebdad6910

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