00e5e4c53c99d62c722b309b6e394e3c53d47a23406730433b4aaf928e06512d

Analysis

max time kernel
81s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-11-2024 16:01

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General

Target

$R0/Uninstall ClickOnce.exe
Size

296KB
MD5

c1797151ec7b5f88a55b109185186829
SHA1

8a0aaf201fd9411ed2f2ffbf41bd982a08cdeb16
SHA256

194bc9e658e9a91e1a7dc3efa395645dc9b77b74ba4d8935bbcde9c3abd9f87f
SHA512

d3fdac294390f11b83c8ebfdb97e4daafad759a07281bcb66e749a6566df9c4d02ff5db0bc796736582981942a8ff33189636bb60c5299ea864072884d77e5ec
SSDEEP

3072:Nn77v00hEoDEtauPLig6AbTXDKyI0cpQLYsCaH2tvhOEA1RJCir86SrSrv6Ia3+:N740ITig9XDKyITysvs2t0EyL+yaO

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Un_A.exe

pid	Process
2040	Un_A.exe

Loads dropped DLL 5 IoCs

Processes:

Uninstall ClickOnce.exeUn_A.exe

pid	Process
3004	Uninstall ClickOnce.exe
2040	Un_A.exe
2040	Un_A.exe
2040	Un_A.exe
2040	Un_A.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

Processes:

tasklist.exe

pid	Process
2752	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

Processes:

cmd.exefind.exetasklist.exeUninstall ClickOnce.exeUn_A.exe

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Uninstall ClickOnce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Un_A.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Un_A.exetasklist.exe

pid	Process
2040	Un_A.exe
2752	tasklist.exe
2752	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

tasklist.exe

description	pid	Process
Token: SeDebugPrivilege	2752	tasklist.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

Uninstall ClickOnce.exeUn_A.execmd.exe

description	pid	Process	procid_target
PID 3004 wrote to memory of 2040	3004	Uninstall ClickOnce.exe	31
PID 3004 wrote to memory of 2040	3004	Uninstall ClickOnce.exe	31
PID 3004 wrote to memory of 2040	3004	Uninstall ClickOnce.exe	31
PID 3004 wrote to memory of 2040	3004	Uninstall ClickOnce.exe	31
PID 2040 wrote to memory of 2652	2040	Un_A.exe	32
PID 2040 wrote to memory of 2652	2040	Un_A.exe	32
PID 2040 wrote to memory of 2652	2040	Un_A.exe	32
PID 2040 wrote to memory of 2652	2040	Un_A.exe	32
PID 2652 wrote to memory of 2752	2652	cmd.exe	34
PID 2652 wrote to memory of 2752	2652	cmd.exe	34
PID 2652 wrote to memory of 2752	2652	cmd.exe	34
PID 2652 wrote to memory of 2752	2652	cmd.exe	34
PID 2652 wrote to memory of 2756	2652	cmd.exe	35
PID 2652 wrote to memory of 2756	2652	cmd.exe	35
PID 2652 wrote to memory of 2756	2652	cmd.exe	35
PID 2652 wrote to memory of 2756	2652	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall ClickOnce.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall ClickOnce.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3004
- 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:2040
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c tasklist /FI "USERNAME eq %USERNAME%" /FI "IMAGENAME eq ClickOnce.exe" /FO csv | "C:\Windows\system32\find.exe" "ClickOnce.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2652
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq ClickOnce.exe" /FO csv
      4⤵
      Enumerates processes with tasklist
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2752
  - - C:\Windows\SysWOW64\find.exe
      "C:\Windows\system32\find.exe" "ClickOnce.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2756

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

\Users\Admin\AppData\Local\Temp\nstDFA6.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
\Users\Admin\AppData\Local\Temp\nstDFA6.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

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\Users\Admin\AppData\Local\Temp\nstDFA6.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

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\Users\Admin\AppData\Local\Temp\nstDFA6.tmp\nsExec.dll

Filesize
6KB

MD5
ec0504e6b8a11d5aad43b296beeb84b2

SHA1
91b5ce085130c8c7194d66b2439ec9e1c206497c

SHA256
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962

SHA512
3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57

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

Filesize
296KB

MD5
c1797151ec7b5f88a55b109185186829

SHA1
8a0aaf201fd9411ed2f2ffbf41bd982a08cdeb16

SHA256
194bc9e658e9a91e1a7dc3efa395645dc9b77b74ba4d8935bbcde9c3abd9f87f

SHA512
d3fdac294390f11b83c8ebfdb97e4daafad759a07281bcb66e749a6566df9c4d02ff5db0bc796736582981942a8ff33189636bb60c5299ea864072884d77e5ec

Download Submit