754a1194c21c5f50675f0025927d6fcd8eba11047b9fc6a1c028f4855052c1b0

Analysis

max time kernel
146s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
04/10/2024, 08:17

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General

Target

uninst.exe
Size

425KB
MD5

a66cd68e574c04fda61a2f579e053f24
SHA1

8244163229f4ce6f31bb18b93f7228785eb40c3c
SHA256

cc0bfdfb8e26f009f903767ce604c4ea380dc328cb1d762ca64edaa12aafc6d9
SHA512

d48fa2f3a6b32f9579d09a1d97e54e8daec6ac8ee02c1afc9700071a13b3a8d3b9ef07945282ed151d9a19b18b780820e299fa8334002f63e20307cec4553359
SSDEEP

3072:vLuXzXwYyr6Doocc6AWyl5gVjATqzq+kRrU8rUCuB:vpIJWyLT+iReCuB

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1368	Un_A.exe

Executes dropped EXE 1 IoCs

pid	Process
1368	Un_A.exe

Loads dropped DLL 2 IoCs

pid	Process
1368	Un_A.exe
1368	Un_A.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	uninst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Un_A.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral31/files/0x000100000002adbe-3.dat	nsis_installer_1
behavioral31/files/0x000100000002adbe-3.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1368	Un_A.exe
1368	Un_A.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 1368	1568	uninst.exe	78
PID 1568 wrote to memory of 1368	1568	uninst.exe	78
PID 1568 wrote to memory of 1368	1568	uninst.exe	78

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1368

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\nspB864.tmp\KillProcDLL.dll

Filesize
32KB

MD5
83142eac84475f4ca889c73f10d9c179

SHA1
dbe43c0de8ef881466bd74861b2e5b17598b5ce8

SHA256
ae2f1658656e554f37e6eac896475a3862841a18ffc6fad2754e2d3525770729

SHA512
1c66eab21f0c9e0b99ecc3844516a6978f52e0c7f489405a427532ecbe78947c37dac5b4c8b722cc8bc1edfb74ba4824519d56099e587e754e5c668701e83bd1

Download Submit
C:\Users\Admin\AppData\Local\Temp\nspB864.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

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

Filesize
425KB

MD5
a66cd68e574c04fda61a2f579e053f24

SHA1
8244163229f4ce6f31bb18b93f7228785eb40c3c

SHA256
cc0bfdfb8e26f009f903767ce604c4ea380dc328cb1d762ca64edaa12aafc6d9

SHA512
d48fa2f3a6b32f9579d09a1d97e54e8daec6ac8ee02c1afc9700071a13b3a8d3b9ef07945282ed151d9a19b18b780820e299fa8334002f63e20307cec4553359

Download Submit