fb21baf4e0854d03627b5c34a36688dedb2ce4de6fc9b6ec90188f55b33dbb98

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09/09/2024, 03:11

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General

Target
gunzipped.exe
Size 495KB
Sample240909-dplhmsydrr
SHA256 fb21baf4e0854d03627b5c34a36688dedb2ce4de6fc9b6ec90188f55b33dbb98
MD5 ab366b2f1f6b791e92161ee4fdac7390
SHA1 921f4995c0a12dfc275725a92ba101098d348ea5
SHA512 05b16a84b1eb00196c5473fcf92bdbdcacb91d12504f45c2e36a372b6964d43bf4655636a3fbd4b758c78390505802a6b9a7f6dd9fbb2981e6d577c582b6db91
SSDEEP 12288:FhHh3fYi/b8j3G4xTyjJh6jwtCSEijprUe1c9i72lMkR:V3fJjU3ZTo1E1yckE7
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2364	powershell.exe
1488	powershell.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 4 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gunzipped.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2296	gunzipped.exe
2296	gunzipped.exe
2296	gunzipped.exe
2296	gunzipped.exe
2296	gunzipped.exe
2296	gunzipped.exe
2296	gunzipped.exe
2296	gunzipped.exe
2296	gunzipped.exe
2296	gunzipped.exe
2364	powershell.exe
1488	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2296	gunzipped.exe
Token: SeDebugPrivilege	2364	powershell.exe
Token: SeDebugPrivilege	1488	powershell.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2364	2296	gunzipped.exe	31
PID 2296 wrote to memory of 2364	2296	gunzipped.exe	31
PID 2296 wrote to memory of 2364	2296	gunzipped.exe	31
PID 2296 wrote to memory of 2364	2296	gunzipped.exe	31
PID 2296 wrote to memory of 1488	2296	gunzipped.exe	33
PID 2296 wrote to memory of 1488	2296	gunzipped.exe	33
PID 2296 wrote to memory of 1488	2296	gunzipped.exe	33
PID 2296 wrote to memory of 1488	2296	gunzipped.exe	33
PID 2296 wrote to memory of 2480	2296	gunzipped.exe	34
PID 2296 wrote to memory of 2480	2296	gunzipped.exe	34
PID 2296 wrote to memory of 2480	2296	gunzipped.exe	34
PID 2296 wrote to memory of 2480	2296	gunzipped.exe	34
PID 2296 wrote to memory of 2704	2296	gunzipped.exe	37
PID 2296 wrote to memory of 2704	2296	gunzipped.exe	37
PID 2296 wrote to memory of 2704	2296	gunzipped.exe	37
PID 2296 wrote to memory of 2704	2296	gunzipped.exe	37
PID 2296 wrote to memory of 2828	2296	gunzipped.exe	38
PID 2296 wrote to memory of 2828	2296	gunzipped.exe	38
PID 2296 wrote to memory of 2828	2296	gunzipped.exe	38
PID 2296 wrote to memory of 2828	2296	gunzipped.exe	38
PID 2296 wrote to memory of 2776	2296	gunzipped.exe	39
PID 2296 wrote to memory of 2776	2296	gunzipped.exe	39
PID 2296 wrote to memory of 2776	2296	gunzipped.exe	39
PID 2296 wrote to memory of 2776	2296	gunzipped.exe	39
PID 2296 wrote to memory of 2620	2296	gunzipped.exe	40
PID 2296 wrote to memory of 2620	2296	gunzipped.exe	40
PID 2296 wrote to memory of 2620	2296	gunzipped.exe	40
PID 2296 wrote to memory of 2620	2296	gunzipped.exe	40
PID 2296 wrote to memory of 2232	2296	gunzipped.exe	41
PID 2296 wrote to memory of 2232	2296	gunzipped.exe	41
PID 2296 wrote to memory of 2232	2296	gunzipped.exe	41
PID 2296 wrote to memory of 2232	2296	gunzipped.exe	41

C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
"C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2364
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YrEHwmJ.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1488
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YrEHwmJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEA40.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2480
- C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
  "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  PID:2704
- C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
  "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  PID:2828
- C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
  "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  PID:2776
- C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
  "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  PID:2620
- C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
  "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
  2⤵
  PID:2232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

tmpEA40.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpEA40.tmp
Size 1KB
SHA256 9b65ac38f3cee60ecb2f856474fcc07edf92b813a4169fdd76b40c0585fd0391
MD5 d7c133e171704497a3cf92b864917696
SHA1 dc7c214a89d19261d2c9033f52b3b93fe991fddf
SHA512 a0d77000a7c6dfc8d42efda17cda15a07bb179dbbb0a42fa72c1708584fe05a01769989c9f1c4411c1fe277ec521cc6b38fdc9e5cffaa4a2852b6a092f2a6f17
MD5 SHA1 SHA512

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A6CSCYQNBFUV6Y5C32I2.temp

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\A6CSCYQNBFUV6Y5C32I2.temp
Size 7KB
SHA256 68f581da736afdeaa50c3b2e1dcb0e487e12f74a13ded1b3fc2bec0ba27577a9
MD5 950ef6b4924df856b0fe291b6a53e212
SHA1 1e28c1203217b6cb54c5231941a2a332443c068d
SHA512 6d2ed7b9e1e5205e2b4d4dc16beb27e11f4e978a88a4194c57a271825a6e4745200547846b7a09af67dd4ce251edafb3ca33e3e3403bd6cb74d001982c713a8e
SSDEEP 96:QZafCZPM8cnqvsqvJCwoTZafCZPM8cnqvsEHyqvJCworJe+OiQHfAN7+eZXlUV+:IvPIUo9vPIAHnorJeG6AN7+eZN
MD5 SHA1 SHA512 SSDEEP

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memory/2296-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

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memory/2296-1-0x00000000003F0000-0x000000000046E000-memory.dmp

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memory/2296-2-0x00000000747A0000-0x0000000074E8E000-memory.dmp

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memory/2296-3-0x00000000003E0000-0x00000000003F0000-memory.dmp

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memory/2296-4-0x00000000747AE000-0x00000000747AF000-memory.dmp

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memory/2296-5-0x00000000747A0000-0x0000000074E8E000-memory.dmp

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memory/2296-6-0x0000000004F30000-0x0000000004F92000-memory.dmp

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memory/2296-19-0x00000000747A0000-0x0000000074E8E000-memory.dmp

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