43c3d524f132423d0dde8c50ab358fac413c68221b1bb733bbfe1f4ef6a4e759

Analysis

max time kernel
149s
max time network
199s
platform
windows7_x64
resource
win7v20210408
submitted
22/05/2021, 18:36

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General

Target
2887c0f490d38170e31cfd01eb4d0dc9.exe
Size 838KB
Sample210522-13walqja96
SHA256 43c3d524f132423d0dde8c50ab358fac413c68221b1bb733bbfe1f4ef6a4e759
MD5 2887c0f490d38170e31cfd01eb4d0dc9
SHA1 247fca99c72758a2779412a58270ad54dad7afe3
SHA512 8b5cc99308ef749c1700b7a9ae0b0e5eeee4bd4a733d179979ffa1e775bb2b6c44528fd274ec34a043f6f26ca8343b8c38e2ac2444e4edd6ea2edc168836ad63
MD5 SHA1 SHA512

Score

7^/10

discovery persistence

Malware Config

Signatures

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
112	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\845591d9-9814-416e-b28d-db4428b680b0\\2887c0f490d38170e31cfd01eb4d0dc9.exe\" --AutoStart"	2887c0f490d38170e31cfd01eb4d0dc9.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2000 set thread context of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 756 set thread context of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1324	2887c0f490d38170e31cfd01eb4d0dc9.exe
1324	2887c0f490d38170e31cfd01eb4d0dc9.exe
372	2887c0f490d38170e31cfd01eb4d0dc9.exe
372	2887c0f490d38170e31cfd01eb4d0dc9.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 2000 wrote to memory of 1324	2000	2887c0f490d38170e31cfd01eb4d0dc9.exe	29
PID 1324 wrote to memory of 112	1324	2887c0f490d38170e31cfd01eb4d0dc9.exe	32
PID 1324 wrote to memory of 112	1324	2887c0f490d38170e31cfd01eb4d0dc9.exe	32
PID 1324 wrote to memory of 112	1324	2887c0f490d38170e31cfd01eb4d0dc9.exe	32
PID 1324 wrote to memory of 112	1324	2887c0f490d38170e31cfd01eb4d0dc9.exe	32
PID 1324 wrote to memory of 756	1324	2887c0f490d38170e31cfd01eb4d0dc9.exe	33
PID 1324 wrote to memory of 756	1324	2887c0f490d38170e31cfd01eb4d0dc9.exe	33
PID 1324 wrote to memory of 756	1324	2887c0f490d38170e31cfd01eb4d0dc9.exe	33
PID 1324 wrote to memory of 756	1324	2887c0f490d38170e31cfd01eb4d0dc9.exe	33
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34
PID 756 wrote to memory of 372	756	2887c0f490d38170e31cfd01eb4d0dc9.exe	34

C:\Users\Admin\AppData\Local\Temp\2887c0f490d38170e31cfd01eb4d0dc9.exe
"C:\Users\Admin\AppData\Local\Temp\2887c0f490d38170e31cfd01eb4d0dc9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Users\Admin\AppData\Local\Temp\2887c0f490d38170e31cfd01eb4d0dc9.exe
  "C:\Users\Admin\AppData\Local\Temp\2887c0f490d38170e31cfd01eb4d0dc9.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\845591d9-9814-416e-b28d-db4428b680b0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:112
- - C:\Users\Admin\AppData\Local\Temp\2887c0f490d38170e31cfd01eb4d0dc9.exe
    "C:\Users\Admin\AppData\Local\Temp\2887c0f490d38170e31cfd01eb4d0dc9.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:756
  - - C:\Users\Admin\AppData\Local\Temp\2887c0f490d38170e31cfd01eb4d0dc9.exe
      "C:\Users\Admin\AppData\Local\Temp\2887c0f490d38170e31cfd01eb4d0dc9.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:372

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/372-71-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1324-59-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1324-61-0x0000000075D11000-0x0000000075D13000-memory.dmp

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memory/1324-63-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2000-62-0x00000000004E0000-0x00000000005FB000-memory.dmp

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