5557bc2b4439f7e348cc30dfab22714f051296d8906691256d1280715cb40825

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
2188	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2188	Au_.exe

Loads dropped DLL 3 IoCs

pid	Process
1956	uninst.exe
2188	Au_.exe
2188	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
behavioral21/files/0x00080000000122cd-2.dat	nsis_installer_1
behavioral21/files/0x00080000000122cd-2.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2188	Au_.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe
2700	ddqjh_wqeqd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2188	Au_.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 2188	1956	uninst.exe	28
PID 1956 wrote to memory of 2188	1956	uninst.exe	28
PID 1956 wrote to memory of 2188	1956	uninst.exe	28
PID 1956 wrote to memory of 2188	1956	uninst.exe	28
PID 1956 wrote to memory of 2188	1956	uninst.exe	28
PID 1956 wrote to memory of 2188	1956	uninst.exe	28
PID 1956 wrote to memory of 2188	1956	uninst.exe	28
PID 2188 wrote to memory of 2700	2188	Au_.exe	30
PID 2188 wrote to memory of 2700	2188	Au_.exe	30
PID 2188 wrote to memory of 2700	2188	Au_.exe	30
PID 2188 wrote to memory of 2700	2188	Au_.exe	30

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1956
- 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 behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:2188
- - 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:2700

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
ca1558e4105f24c2fef0a377d82cb331

SHA1
a4aac3ea41c32322622004f9a1f208ae23fc7b15

SHA256
2e277ae662ce3c0b7b5e2c97368ba1ba89b936298180109248681509436a8be4

SHA512
307c2c6ed8de67d3c2c278c43c3a0e6dedc5b360fadbec3d2f584700e83f916015ccfef01f7e1dc22f97ba21eac650663be6550abe120b6cc8c94a83f6c04a34

Download Submit
\Users\Admin\AppData\Local\Temp\nsy4DD3.tmp\FindProcDLL.dll

Filesize
3KB

MD5
8614c450637267afacad1645e23ba24a

SHA1
e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2

SHA256
0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758

SHA512
af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b

Download Submit
\Users\Admin\AppData\Local\Temp\nsy4DD3.tmp\inetc.dll

Filesize
20KB

MD5
50fdadda3e993688401f6f1108fabdb4

SHA1
04a9ae55d0fb726be49809582cea41d75bf22a9a

SHA256
6d6ddc0d2b7d59eb91be44939457858ced5eb23cf4aa93ef33bb600eb28de6f6

SHA512
e9628870feea8c3aaefe22a2af41cf34b1c1778c4a0e81d069f50553ce1a23f68a0ba74b296420b2be92425d4995a43e51c018c2e8197ec2ec39305e87c56be8

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\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe

Filesize
290KB

MD5
82d67e901c99057e9cebe02d5e954377

SHA1
de93df7d7e3d73b2d85fe1cdcbed0b596d0d5da9

SHA256
201bdb7cc7b97c26477ae814a4d16e762a3e54cfb9bc7cb4de5d6fd4f72d2ba2

SHA512
9315f18462e2c9f958f7fd164d561c641bdf09331394a80833b0bd2a61bffdfa73b0564d5061eae565fb3489dd7d5d1178151c8dbb18c4a4b9323f150363fcd6

Download Submit
memory/2188-14-0x0000000010000000-0x0000000010003000-memory.dmp

Filesize
12KB

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