9077ab0eef22bcce3902ffec8b139d5024348dbf14699fa1bef0948ae75aa609

Analysis

max time kernel
118s
max time network
114s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26-07-2024 01:26

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General

Target

49447847eb6bfa4587c3df0ee4c87020N.exe
Size

308KB
MD5

49447847eb6bfa4587c3df0ee4c87020
SHA1

cf65ef4b44b0016e493f9ff3bdbc8589b851a87d
SHA256

9077ab0eef22bcce3902ffec8b139d5024348dbf14699fa1bef0948ae75aa609
SHA512

85bc8a48f25f570fc9872d364c59f0bf2c4858d5b820497c76e5e001217b82fabfc50ac863f382563dfb7b578f4da66935bdd0558d91a1f09819d1429430fc6c
SSDEEP

3072:/c3sBG7mXh7m/zZM3jAbNOM6CNtDCZFLq:E3sBz0Z4Mj72F

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
159380	csrsll.exe
31976	csrsll.exe
32016	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
159596	49447847eb6bfa4587c3df0ee4c87020N.exe
159596	49447847eb6bfa4587c3df0ee4c87020N.exe
159596	49447847eb6bfa4587c3df0ee4c87020N.exe
159596	49447847eb6bfa4587c3df0ee4c87020N.exe
159596	49447847eb6bfa4587c3df0ee4c87020N.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/159596-73920-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/159596-73923-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/159596-73919-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/159596-73924-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/159596-73925-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/159596-84808-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/32016-147840-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/159596-147846-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/31976-147851-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2292 set thread context of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 159380 set thread context of 31976	159380	csrsll.exe	35
PID 159380 set thread context of 32016	159380	csrsll.exe	36

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 7 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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	49447847eb6bfa4587c3df0ee4c87020N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	49447847eb6bfa4587c3df0ee4c87020N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe
Token: SeDebugPrivilege	31976	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2292	49447847eb6bfa4587c3df0ee4c87020N.exe
159596	49447847eb6bfa4587c3df0ee4c87020N.exe
159380	csrsll.exe
31976	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 2292 wrote to memory of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 2292 wrote to memory of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 2292 wrote to memory of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 2292 wrote to memory of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 2292 wrote to memory of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 2292 wrote to memory of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 2292 wrote to memory of 159596	2292	49447847eb6bfa4587c3df0ee4c87020N.exe	30
PID 159596 wrote to memory of 159456	159596	49447847eb6bfa4587c3df0ee4c87020N.exe	31
PID 159596 wrote to memory of 159456	159596	49447847eb6bfa4587c3df0ee4c87020N.exe	31
PID 159596 wrote to memory of 159456	159596	49447847eb6bfa4587c3df0ee4c87020N.exe	31
PID 159596 wrote to memory of 159456	159596	49447847eb6bfa4587c3df0ee4c87020N.exe	31
PID 159456 wrote to memory of 159404	159456	cmd.exe	33
PID 159456 wrote to memory of 159404	159456	cmd.exe	33
PID 159456 wrote to memory of 159404	159456	cmd.exe	33
PID 159456 wrote to memory of 159404	159456	cmd.exe	33
PID 159596 wrote to memory of 159380	159596	49447847eb6bfa4587c3df0ee4c87020N.exe	34
PID 159596 wrote to memory of 159380	159596	49447847eb6bfa4587c3df0ee4c87020N.exe	34
PID 159596 wrote to memory of 159380	159596	49447847eb6bfa4587c3df0ee4c87020N.exe	34
PID 159596 wrote to memory of 159380	159596	49447847eb6bfa4587c3df0ee4c87020N.exe	34
PID 159380 wrote to memory of 31976	159380	csrsll.exe	35
PID 159380 wrote to memory of 31976	159380	csrsll.exe	35
PID 159380 wrote to memory of 31976	159380	csrsll.exe	35
PID 159380 wrote to memory of 31976	159380	csrsll.exe	35
PID 159380 wrote to memory of 31976	159380	csrsll.exe	35
PID 159380 wrote to memory of 31976	159380	csrsll.exe	35
PID 159380 wrote to memory of 31976	159380	csrsll.exe	35
PID 159380 wrote to memory of 31976	159380	csrsll.exe	35
PID 159380 wrote to memory of 32016	159380	csrsll.exe	36
PID 159380 wrote to memory of 32016	159380	csrsll.exe	36
PID 159380 wrote to memory of 32016	159380	csrsll.exe	36
PID 159380 wrote to memory of 32016	159380	csrsll.exe	36
PID 159380 wrote to memory of 32016	159380	csrsll.exe	36
PID 159380 wrote to memory of 32016	159380	csrsll.exe	36
PID 159380 wrote to memory of 32016	159380	csrsll.exe	36
PID 159380 wrote to memory of 32016	159380	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\49447847eb6bfa4587c3df0ee4c87020N.exe
"C:\Users\Admin\AppData\Local\Temp\49447847eb6bfa4587c3df0ee4c87020N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\49447847eb6bfa4587c3df0ee4c87020N.exe
  "C:\Users\Admin\AppData\Local\Temp\49447847eb6bfa4587c3df0ee4c87020N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:159596
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\LTKUQ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:159456
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:159404
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:159380
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:31976
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:32016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\LTKUQ.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
308KB

MD5
98e9d2bb3ac555e09bb4321b0b020686

SHA1
ed5acec36c93dfa25432f26b0909463453b2b145

SHA256
202441c4661031d62c9875ba2966bd9bcbef72d7d85c1a4a0207b235e0015bc6

SHA512
6a1854f984c4e0833c86ecce49d927719c67e7ac6fa673b8895288f3234de4511d926c533184c6ddd02e28006fab1da363873f9d4cb52099c7e218327a231f6d

Download Submit
memory/2292-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2292-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/31976-147851-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/32016-147840-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/159380-73965-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/159596-73925-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/159596-73924-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/159596-73919-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/159596-73922-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/159596-73923-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/159596-84808-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/159596-73920-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/159596-147846-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/159596-73916-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads