ffaa6ae5e499945093a6fe2a7a05504f8796127cd6f4de239b47a7e86715214c

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13-02-2024 06:06

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General

Target

SAMPUninstall.exe
Size

56KB
MD5

bffa504cd63305418858b150faa8f408
SHA1

86886fd2378aa33935cf684f056454859713aed4
SHA256

d00f8bf2eaa1994b0064d7b14fc987b0aab9b3c440a4177257ee2d3217fe6d3b
SHA512

6b8958a4ccffce02ba8e4390f66121a02116e2b2ef9c4baa2eea62b8acfe380d0c0dd5e773f83b7062467a34019612d3f8a531e1a4ffcefb769de964cbf02019
SSDEEP

1536:HLXB65939tY6HBg4sXJOgdLeAyN/dIM6su:HLk395hYXJOceAlMM

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

Processes:

Au_.exe

pid process

1704 Au_.exe
Executes dropped EXE 1 IoCs

Processes:

Au_.exe

pid process

1704 Au_.exe
Loads dropped DLL 5 IoCs

Processes:

SAMPUninstall.exeAu_.exe

pid process

1916 SAMPUninstall.exe
1704 Au_.exe
1704 Au_.exe
1704 Au_.exe
1704 Au_.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1704	Au_.exe

pid	process
1704	Au_.exe

pid	process
1916	SAMPUninstall.exe
1704	Au_.exe
1704	Au_.exe
1704	Au_.exe
1704	Au_.exe

NSIS installer 2 IoCs

installer

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe	nsis_installer_1
\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Au_.exe

pid process

1704 Au_.exe

pid	process
1704	Au_.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

SAMPUninstall.exe

description	pid	process	target process
PID 1916 wrote to memory of 1704	1916	SAMPUninstall.exe	Au_.exe
PID 1916 wrote to memory of 1704	1916	SAMPUninstall.exe	Au_.exe
PID 1916 wrote to memory of 1704	1916	SAMPUninstall.exe	Au_.exe
PID 1916 wrote to memory of 1704	1916	SAMPUninstall.exe	Au_.exe
PID 1916 wrote to memory of 1704	1916	SAMPUninstall.exe	Au_.exe
PID 1916 wrote to memory of 1704	1916	SAMPUninstall.exe	Au_.exe
PID 1916 wrote to memory of 1704	1916	SAMPUninstall.exe	Au_.exe

C:\Users\Admin\AppData\Local\Temp\SAMPUninstall.exe
"C:\Users\Admin\AppData\Local\Temp\SAMPUninstall.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1916

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⤵
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: GetForegroundWindowSpam
PID:1704

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nst55A0.tmp\ioSpecial.ini
Filesize
538B

MD5
57306d647251980383208ca3c402f51c

SHA1
64cc30945353c2799aa552d1fde9fca9b850573d

SHA256
6b46647db4af556e72c1fdac72436f80fa2c3ba5a436196178e895e4e0699df6

SHA512
9370e8b570b6ebe8049469b9e9daf4d7c259ce332c60ac7829053a331952815ffebc2861253e8b97ccd3e44039b923a9c15987e9c1d095f1d495d57c351f4966

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C:\Users\Admin\AppData\Local\Temp\nst55A0.tmp\ioSpecial.ini
Filesize
577B

MD5
76a886991debf28edb13216826b66823

SHA1
0a88f0db2289ec48d1cf7a6fa33c5a72e649b108

SHA256
2fac33f63d2752658f10c079b073d0dea774deee25125fbaf9f4b423780dc130

SHA512
af36dc4d91ec7f58552fe1e4fc25a37b56c113d0c7cd09dab7e041e46b00575385a1ccca91c16f2880c5167e448402bbcb3cda8838a4322c0e4bd13d0f8167b4

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\Users\Admin\AppData\Local\Temp\nst55A0.tmp\InstallOptions.dll
Filesize
14KB

MD5
325b008aec81e5aaa57096f05d4212b5

SHA1
27a2d89747a20305b6518438eff5b9f57f7df5c3

SHA256
c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

SHA512
18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

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\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
Filesize
56KB

MD5
bffa504cd63305418858b150faa8f408

SHA1
86886fd2378aa33935cf684f056454859713aed4

SHA256
d00f8bf2eaa1994b0064d7b14fc987b0aab9b3c440a4177257ee2d3217fe6d3b

SHA512
6b8958a4ccffce02ba8e4390f66121a02116e2b2ef9c4baa2eea62b8acfe380d0c0dd5e773f83b7062467a34019612d3f8a531e1a4ffcefb769de964cbf02019

Download Submit