2262bf3bc3250b4bcefab73d88c2fd44b2d2fe02e4350f42e1f9bcfcab98a867

Analysis

max time kernel
89s
max time network
47s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12/10/2022, 07:30

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General

Target
Ekstre_2022.10.12.pdf.exe
Size 921KB
Sample221012-jbt6hschb2
SHA256 2262bf3bc3250b4bcefab73d88c2fd44b2d2fe02e4350f42e1f9bcfcab98a867
MD5 0815649cea54288abd3e7d836d5cf1ff
SHA1 084a6d7a1a695bda8d1d8408a6f58717e3e6f842
SHA512 34696410d40e122eddb4f08786462dd9822c9e2f468414f41a3ffab605a03a8691ae3f214c0de31c3e94005ce831f755d7001954a89be7769825c1afa10facfa
SSDEEP 12288:a6WesIJjyp/d/qLsrig63vt1U1SQKrAKtyJuXv18p5ZoowgL:Be4j6Rug63vcat
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
892	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1920	Ekstre_2022.10.12.pdf.exe
1920	Ekstre_2022.10.12.pdf.exe
1920	Ekstre_2022.10.12.pdf.exe
1920	Ekstre_2022.10.12.pdf.exe
1920	Ekstre_2022.10.12.pdf.exe
1920	Ekstre_2022.10.12.pdf.exe
1920	Ekstre_2022.10.12.pdf.exe
1920	Ekstre_2022.10.12.pdf.exe
1936	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1920	Ekstre_2022.10.12.pdf.exe
Token: SeDebugPrivilege	1936	powershell.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 1936	1920	Ekstre_2022.10.12.pdf.exe	27
PID 1920 wrote to memory of 1936	1920	Ekstre_2022.10.12.pdf.exe	27
PID 1920 wrote to memory of 1936	1920	Ekstre_2022.10.12.pdf.exe	27
PID 1920 wrote to memory of 1936	1920	Ekstre_2022.10.12.pdf.exe	27
PID 1920 wrote to memory of 892	1920	Ekstre_2022.10.12.pdf.exe	29
PID 1920 wrote to memory of 892	1920	Ekstre_2022.10.12.pdf.exe	29
PID 1920 wrote to memory of 892	1920	Ekstre_2022.10.12.pdf.exe	29
PID 1920 wrote to memory of 892	1920	Ekstre_2022.10.12.pdf.exe	29
PID 1920 wrote to memory of 1692	1920	Ekstre_2022.10.12.pdf.exe	31
PID 1920 wrote to memory of 1692	1920	Ekstre_2022.10.12.pdf.exe	31
PID 1920 wrote to memory of 1692	1920	Ekstre_2022.10.12.pdf.exe	31
PID 1920 wrote to memory of 1692	1920	Ekstre_2022.10.12.pdf.exe	31
PID 1920 wrote to memory of 1740	1920	Ekstre_2022.10.12.pdf.exe	32
PID 1920 wrote to memory of 1740	1920	Ekstre_2022.10.12.pdf.exe	32
PID 1920 wrote to memory of 1740	1920	Ekstre_2022.10.12.pdf.exe	32
PID 1920 wrote to memory of 1740	1920	Ekstre_2022.10.12.pdf.exe	32
PID 1920 wrote to memory of 884	1920	Ekstre_2022.10.12.pdf.exe	33
PID 1920 wrote to memory of 884	1920	Ekstre_2022.10.12.pdf.exe	33
PID 1920 wrote to memory of 884	1920	Ekstre_2022.10.12.pdf.exe	33
PID 1920 wrote to memory of 884	1920	Ekstre_2022.10.12.pdf.exe	33
PID 1920 wrote to memory of 1164	1920	Ekstre_2022.10.12.pdf.exe	35
PID 1920 wrote to memory of 1164	1920	Ekstre_2022.10.12.pdf.exe	35
PID 1920 wrote to memory of 1164	1920	Ekstre_2022.10.12.pdf.exe	35
PID 1920 wrote to memory of 1164	1920	Ekstre_2022.10.12.pdf.exe	35
PID 1920 wrote to memory of 1412	1920	Ekstre_2022.10.12.pdf.exe	34
PID 1920 wrote to memory of 1412	1920	Ekstre_2022.10.12.pdf.exe	34
PID 1920 wrote to memory of 1412	1920	Ekstre_2022.10.12.pdf.exe	34
PID 1920 wrote to memory of 1412	1920	Ekstre_2022.10.12.pdf.exe	34

C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rnYKfuttQL.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1936
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rnYKfuttQL" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE428.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:892
- C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe"
  2⤵
  PID:1692
- C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe"
  2⤵
  PID:1740
- C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe"
  2⤵
  PID:884
- C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe"
  2⤵
  PID:1412
- C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Ekstre_2022.10.12.pdf.exe"
  2⤵
  PID:1164

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpE428.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpE428.tmp
Size 1KB
SHA256 343b6495c9f350bb7dc006fb52cb047327bba1f1b415c0421d40552866b8893e
MD5 54e2e14812234a9395317213957c21c3
SHA1 b23d9ebfded6ed45b2d1a3bb7aefebba7697fbaf
SHA512 c22928902dea88ee61b15ee7f692a0f75a3879c65c25b6463c58cbb1064e232aa5d581da56e5a015aa9259c2984e0b7c74d535ad82f5c09279bfa752a1a13a5f
MD5 SHA1 SHA512

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memory/1920-54-0x0000000000370000-0x000000000045C000-memory.dmp

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memory/1920-55-0x0000000076121000-0x0000000076123000-memory.dmp

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memory/1920-56-0x0000000000690000-0x00000000006AA000-memory.dmp

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memory/1920-57-0x0000000000740000-0x000000000074C000-memory.dmp

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memory/1920-58-0x00000000049A0000-0x0000000004A20000-memory.dmp

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memory/1920-63-0x0000000004A20000-0x0000000004A46000-memory.dmp

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memory/1936-64-0x000000006D740000-0x000000006DCEB000-memory.dmp

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memory/1936-65-0x000000006D740000-0x000000006DCEB000-memory.dmp

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