4543d3bd81d78f348d4c11a266c569977331e02fc0dc6046b56d5525971ce2f1

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26/05/2024, 10:35

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General

Target

uninstall.exe
Size

146KB
MD5

040f259d48d6d6053444ac6140371190
SHA1

23155c5cbdee21187b8a13a794f745250cd3303e
SHA256

3c3398487e4fd3cc163d6094971d3ca8cc0244789bd03bcb32141ec8be296cf9
SHA512

8037a3c207a9667caf96b81625d079f96065cd9eac30d484a23da7e1cedaa21821629b3b74f1f66fcede96183f251c491b558e4e4aa79fdc4741eb44d5ed7902
SSDEEP

3072:2QIURTXJjUXRDBbwZkVteD6BrriT+NZcWINO4fwaR:2spUhDB0ZkPBPiT4a3gow0

Score

7^/10

evasion trojan

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3040	Au_.exe

Loads dropped DLL 4 IoCs

pid	Process
1652	uninstall.exe
3040	Au_.exe
3040	Au_.exe
3040	Au_.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Au_.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
behavioral23/files/0x0006000000016ca5-2.dat	nsis_installer_1
behavioral23/files/0x0006000000016ca5-2.dat	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3040	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 3040	1652	uninstall.exe	28
PID 1652 wrote to memory of 3040	1652	uninstall.exe	28
PID 1652 wrote to memory of 3040	1652	uninstall.exe	28
PID 1652 wrote to memory of 3040	1652	uninstall.exe	28

C:\Users\Admin\AppData\Local\Temp\uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\uninstall.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks whether UAC is enabled
  - Suspicious behavior: GetForegroundWindowSpam
  PID:3040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsoD9A.tmp\UAC.dll

Filesize
17KB

MD5
88ad3fd90fc52ac3ee0441a38400a384

SHA1
08bc9e1f5951b54126b5c3c769e3eaed42f3d10b

SHA256
e58884695378cf02715373928bb8ade270baf03144369463f505c3b3808cbc42

SHA512
359496f571e6fa2ec4c5ab5bd1d35d1330586f624228713ae55c65a69e07d8623022ef54337c22c3aab558a9b74d9977c8436f5fea4194899d9ef3ffd74e7dbb

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\Users\Admin\AppData\Local\Temp\nsoD9A.tmp\mIRC.dll

Filesize
23KB

MD5
37951d5d14c5b7d41899bfe3bcf965b8

SHA1
3f429c58188753ce59ef159785c468790955a821

SHA256
41e306c9396301950b4ed6e961736f70514fa57c9d872da11416e09fd0af50ee

SHA512
ba714c83eb2b89e353344b45949090e367b53ab04251ed316c43af60340e3f0d47323b15f4f9929c48910ac18e78178fb4f4dfa1f366ffbcdb6186eb3df15027

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

Filesize
146KB

MD5
040f259d48d6d6053444ac6140371190

SHA1
23155c5cbdee21187b8a13a794f745250cd3303e

SHA256
3c3398487e4fd3cc163d6094971d3ca8cc0244789bd03bcb32141ec8be296cf9

SHA512
8037a3c207a9667caf96b81625d079f96065cd9eac30d484a23da7e1cedaa21821629b3b74f1f66fcede96183f251c491b558e4e4aa79fdc4741eb44d5ed7902

Download Submit