5557bc2b4439f7e348cc30dfab22714f051296d8906691256d1280715cb40825

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 11:58

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General

Target

uninst.exe
Size

290KB
MD5

82d67e901c99057e9cebe02d5e954377
SHA1

de93df7d7e3d73b2d85fe1cdcbed0b596d0d5da9
SHA256

201bdb7cc7b97c26477ae814a4d16e762a3e54cfb9bc7cb4de5d6fd4f72d2ba2
SHA512

9315f18462e2c9f958f7fd164d561c641bdf09331394a80833b0bd2a61bffdfa73b0564d5061eae565fb3489dd7d5d1178151c8dbb18c4a4b9323f150363fcd6
SSDEEP

6144:B8LxBw+5EHN6sLROkcgbubj9g3ZX23SAMKVaBkM:9+5EtTLROSbuNg3EKKZM

Score

7^/10

bootkit persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2400	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2400	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
2400	Au_.exe
2400	Au_.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	ddqjh_wqeqd.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral22/files/0x00090000000226e5-4.dat	nsis_installer_1
behavioral22/files/0x00090000000226e5-4.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
2400	Au_.exe
2400	Au_.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe
4580	ddqjh_wqeqd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4364 wrote to memory of 2400	4364	uninst.exe	89
PID 4364 wrote to memory of 2400	4364	uninst.exe	89
PID 4364 wrote to memory of 2400	4364	uninst.exe	89
PID 2400 wrote to memory of 4580	2400	Au_.exe	97
PID 2400 wrote to memory of 4580	2400	Au_.exe	97
PID 2400 wrote to memory of 4580	2400	Au_.exe	97

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2400
- - C:\Users\Admin\AppData\Local\Temp\ddqjh_wqeqd.exe
    "C:\Users\Admin\AppData\Local\Temp\ddqjh_wqeqd.exe" /uninstallsucc
    3⤵
    - Writes to the Master Boot Record (MBR)
    - Suspicious behavior: EnumeratesProcesses
    PID:4580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\config.ini

Filesize
411B

MD5
650f06bc186202f6569ebdb9c163d197

SHA1
69ae189de6c58d7edfae53b4bc6b81a3c0710f22

SHA256
f5a1e7e9423b1119e61c2db72e47bdec86513f4e1bb5d12f00927dfb4f42d823

SHA512
1b26c5e37efb649d395e6e44f6ea7e1f0f683f6a9a17529d26523e81c80689cf99b4e330c5392a2049f2379e3a64d1e32266ffb339e695a11dc0fbd9d5602d89

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso50FF.tmp\FindProcDLL.dll

Filesize
3KB

MD5
8614c450637267afacad1645e23ba24a

SHA1
e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2

SHA256
0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758

SHA512
af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso50FF.tmp\inetc.dll

Filesize
20KB

MD5
50fdadda3e993688401f6f1108fabdb4

SHA1
04a9ae55d0fb726be49809582cea41d75bf22a9a

SHA256
6d6ddc0d2b7d59eb91be44939457858ced5eb23cf4aa93ef33bb600eb28de6f6

SHA512
e9628870feea8c3aaefe22a2af41cf34b1c1778c4a0e81d069f50553ce1a23f68a0ba74b296420b2be92425d4995a43e51c018c2e8197ec2ec39305e87c56be8

Download Submit
C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe

Filesize
290KB

MD5
82d67e901c99057e9cebe02d5e954377

SHA1
de93df7d7e3d73b2d85fe1cdcbed0b596d0d5da9

SHA256
201bdb7cc7b97c26477ae814a4d16e762a3e54cfb9bc7cb4de5d6fd4f72d2ba2

SHA512
9315f18462e2c9f958f7fd164d561c641bdf09331394a80833b0bd2a61bffdfa73b0564d5061eae565fb3489dd7d5d1178151c8dbb18c4a4b9323f150363fcd6

Download Submit
memory/2400-10-0x0000000010000000-0x0000000010003000-memory.dmp

Filesize
12KB

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