80af86e2da93a0ea40db7ae1ecb7297f585a03ddafa920c0729da8deaa3dc9b6

Analysis

max time kernel
92s
max time network
98s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
20-11-2024 06:46

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General

Target

$R0/Uninstall Lendas.exe
Size

135KB
MD5

d1b25b723b3abee7d7cbff192ede7f5e
SHA1

95371eadeec1b41c015bfab9633e465bf4769676
SHA256

ffc898212880d2ef900d4c480bac8618adc1c8813bbc85de4d35889aa225a5b0
SHA512

8877cf3d223532bfa168937fcd1624bea576674cba8f5ca05d6c267683d11d6383e478965dec125bc446805bac58e8fe221932e226ef611b6562f42779979413
SSDEEP

3072:on77v00hEoDEtausceAgWZ1lD3FvQaH2tvhOEA1RJCir86SrSrv6Ia3O:o740IcmgWZ1lhQs2t0EyL+yae

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2516	Un_A.exe

Loads dropped DLL 6 IoCs

pid	Process
2516	Un_A.exe
2516	Un_A.exe
2516	Un_A.exe
2516	Un_A.exe
2516	Un_A.exe
2516	Un_A.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
1660	tasklist.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 5 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	Uninstall Lendas.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Un_A.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	find.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasklist.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2516	Un_A.exe
2516	Un_A.exe
1660	tasklist.exe
1660	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1660	tasklist.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 2516	1920	Uninstall Lendas.exe	77
PID 1920 wrote to memory of 2516	1920	Uninstall Lendas.exe	77
PID 1920 wrote to memory of 2516	1920	Uninstall Lendas.exe	77
PID 2516 wrote to memory of 4160	2516	Un_A.exe	78
PID 2516 wrote to memory of 4160	2516	Un_A.exe	78
PID 2516 wrote to memory of 4160	2516	Un_A.exe	78
PID 4160 wrote to memory of 1660	4160	cmd.exe	80
PID 4160 wrote to memory of 1660	4160	cmd.exe	80
PID 4160 wrote to memory of 1660	4160	cmd.exe	80
PID 4160 wrote to memory of 4924	4160	cmd.exe	81
PID 4160 wrote to memory of 4924	4160	cmd.exe	81
PID 4160 wrote to memory of 4924	4160	cmd.exe	81

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Lendas.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Lendas.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1920
- 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\$R0\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c tasklist /FI "USERNAME eq %USERNAME%" /FI "IMAGENAME eq Lendas.exe" | %SYSTEMROOT%\System32\find.exe "Lendas.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4160
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq Lendas.exe"
      4⤵
      Enumerates processes with tasklist
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1660
  - - C:\Windows\SysWOW64\find.exe
      C:\Windows\System32\find.exe "Lendas.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:4924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

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\nsx73AA.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsx73AA.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsx73AA.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsx73AA.tmp\nsExec.dll

Filesize
6KB

MD5
ec0504e6b8a11d5aad43b296beeb84b2

SHA1
91b5ce085130c8c7194d66b2439ec9e1c206497c

SHA256
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962

SHA512
3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57

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

Filesize
135KB

MD5
d1b25b723b3abee7d7cbff192ede7f5e

SHA1
95371eadeec1b41c015bfab9633e465bf4769676

SHA256
ffc898212880d2ef900d4c480bac8618adc1c8813bbc85de4d35889aa225a5b0

SHA512
8877cf3d223532bfa168937fcd1624bea576674cba8f5ca05d6c267683d11d6383e478965dec125bc446805bac58e8fe221932e226ef611b6562f42779979413

Download Submit