550321da5b10c472bc719bca2c0df74b240f80eff828079eb5253598fe112ae3

Analysis

max time kernel
68s
max time network
142s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
05-10-2024 12:12

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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

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1028	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
1028	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
1028	Au_.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SAMPUninstall.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral4/files/0x000600000002aa97-3.dat	nsis_installer_1
behavioral4/files/0x000600000002aa97-3.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2832 wrote to memory of 1028	2832	SAMPUninstall.exe	79
PID 2832 wrote to memory of 1028	2832	SAMPUninstall.exe	79
PID 2832 wrote to memory of 1028	2832	SAMPUninstall.exe	79

C:\Users\Admin\AppData\Local\Temp\SAMPUninstall.exe
"C:\Users\Admin\AppData\Local\Temp\SAMPUninstall.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2832
- 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
  - System Location Discovery: System Language Discovery
  PID:1028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsz3574.tmp\InstallOptions.dll

Filesize
14KB

MD5
325b008aec81e5aaa57096f05d4212b5

SHA1
27a2d89747a20305b6518438eff5b9f57f7df5c3

SHA256
c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

SHA512
18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

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C:\Users\Admin\AppData\Local\Temp\nsz3574.tmp\ioSpecial.ini

Filesize
538B

MD5
3e24d1d4746165d694ba997016c03af7

SHA1
b23085caeccc1e25602612c38bdc3f21771d7811

SHA256
368ef4643e663a4e68136dd5674805aef827136ea04aea11311a3b01d67fe050

SHA512
b39cf4e41d3e03c5c41d8cbfd720010b5579ce7158c4c3b3a278d8c58439602a6ca70cecf8d5fce6c073fe22b6fe3bd014822c8a81f801056bb2c62afd0e1d86

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C:\Users\Admin\AppData\Local\Temp\nsz3574.tmp\ioSpecial.ini

Filesize
577B

MD5
276ba5cc1dafa6e0d5df483bf1afe7a6

SHA1
56b45474fcebd29ab2491fb6727a3dceedaaa3eb

SHA256
776c3551027197b66b600db9d130983ec5719aac54d0eca6da59464a25f678e1

SHA512
73e414f06bab91f0145e3b6035bfb4e0d505a2098eeeead7ecbb683fd024aa761fdd243aea8a05d595c2ad5e01b756d378becb4c7f1ebc187af99e7ab042d792

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

Filesize
56KB

MD5
bffa504cd63305418858b150faa8f408

SHA1
86886fd2378aa33935cf684f056454859713aed4

SHA256
d00f8bf2eaa1994b0064d7b14fc987b0aab9b3c440a4177257ee2d3217fe6d3b

SHA512
6b8958a4ccffce02ba8e4390f66121a02116e2b2ef9c4baa2eea62b8acfe380d0c0dd5e773f83b7062467a34019612d3f8a531e1a4ffcefb769de964cbf02019

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