291d61c17a1a558d179c8c8993e747e1c5aadc0c5d9bdcbb0bf4723a5eb2d64a

Analysis

max time kernel
121s
max time network
76s
platform
windows7_x64
resource
win7v20210408
submitted
03/08/2021, 14:57

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General

Target
e6750738c8e3adfef9253fd4d3371314.exe
Size 3.5MB
Sample210803-psqdae3brx
SHA256 291d61c17a1a558d179c8c8993e747e1c5aadc0c5d9bdcbb0bf4723a5eb2d64a
MD5 e6750738c8e3adfef9253fd4d3371314
SHA1 4496b0b7738aa02bb82c99abc7650ada605e7d59
SHA512 c22f42dc624f4325b875bf4275fcfff6904e77e16b98c1be6536f6557a0295392d0fef95b68c3ea38f1d7280a8d6410d4502a82a162ac4198c63af8098d726f1
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1928	Svc_host.exe

Loads dropped DLL 4 IoCs

pid	Process
940	e6750738c8e3adfef9253fd4d3371314.exe
940	e6750738c8e3adfef9253fd4d3371314.exe
940	e6750738c8e3adfef9253fd4d3371314.exe
940	e6750738c8e3adfef9253fd4d3371314.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
5	checkip.dyndns.org
7	ipinfo.io

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
824	1928	WerFault.exe	26

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
824	WerFault.exe
824	WerFault.exe
824	WerFault.exe
824	WerFault.exe
824	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
824	WerFault.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1928	Svc_host.exe
Token: SeDebugPrivilege	824	WerFault.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 1928	940	e6750738c8e3adfef9253fd4d3371314.exe	26
PID 940 wrote to memory of 1928	940	e6750738c8e3adfef9253fd4d3371314.exe	26
PID 940 wrote to memory of 1928	940	e6750738c8e3adfef9253fd4d3371314.exe	26
PID 940 wrote to memory of 1928	940	e6750738c8e3adfef9253fd4d3371314.exe	26
PID 1928 wrote to memory of 824	1928	Svc_host.exe	30
PID 1928 wrote to memory of 824	1928	Svc_host.exe	30
PID 1928 wrote to memory of 824	1928	Svc_host.exe	30

C:\Users\Admin\AppData\Local\Temp\e6750738c8e3adfef9253fd4d3371314.exe
"C:\Users\Admin\AppData\Local\Temp\e6750738c8e3adfef9253fd4d3371314.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:940
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Svc_host.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Svc_host.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 1928 -s 1004
    3⤵
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:824

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/824-76-0x000007FEFB531000-0x000007FEFB533000-memory.dmp

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memory/824-77-0x0000000001B80000-0x0000000001B81000-memory.dmp

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memory/940-60-0x0000000075051000-0x0000000075053000-memory.dmp

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memory/1928-69-0x00000000001D0000-0x00000000001D1000-memory.dmp

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memory/1928-71-0x000000001AF70000-0x000000001AF72000-memory.dmp

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memory/1928-73-0x000000001B470000-0x000000001B471000-memory.dmp

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