877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c

Analysis

max time kernel
39s
max time network
43s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
24-07-2022 17:04

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General

Target

877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe
Size

355KB
MD5

165a3bee30ba98005b87a2ff4fd85227
SHA1

6332919eb91565c87cce82217b15d577332da266
SHA256

877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c
SHA512

629220bcaa3480f6725c2d2a677b2aa293cf93183a8d04c45f20f2997a88ea6cc70fb5f1cca8eafe6b36db8b833e7a6248cf94ad0fa078593787814ed018a1ee

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1976	877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe
1976	877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\win.ini	877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe

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
1028	1976	WerFault.exe	26

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 1028	1976	877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe	27
PID 1976 wrote to memory of 1028	1976	877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe	27
PID 1976 wrote to memory of 1028	1976	877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe	27
PID 1976 wrote to memory of 1028	1976	877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe	27

C:\Users\Admin\AppData\Local\Temp\877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe
"C:\Users\Admin\AppData\Local\Temp\877fc9a7c50c9cfb292726ff80f58f7924df6dd693426d890885b544c14a8b3c.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 488
  2⤵
  - Program crash
  PID:1028

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

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\decedent.dll

Filesize
10KB

MD5
e21867fcff7cae00745fb0f90db36131

SHA1
00f587e0bd02ac819349fb1adfe2a25a9613b9ad

SHA256
80c5087c422460f9fbf27b3ffdd5f9020f538cc46a1881df4ce6a01f60b5f507

SHA512
e903c62526d8387b2cd9d1061647a26a1af855b2878eaa370647c0402219505ba3c47070577648530d9075e1bb29b2d63872f9595bed216976fcdea066f95342

Download Submit
\Users\Admin\AppData\Local\Temp\nso2446.tmp\System.dll

Filesize
11KB

MD5
fbe295e5a1acfbd0a6271898f885fe6a

SHA1
d6d205922e61635472efb13c2bb92c9ac6cb96da

SHA256
a1390a78533c47e55cc364e97af431117126d04a7faed49390210ea3e89dd0e1

SHA512
2cb596971e504eaf1ce8e3f09719ebfb3f6234cea5ca7b0d33ec7500832ff4b97ec2bbe15a1fbf7e6a5b02c59db824092b9562cd8991f4d027feab6fd3177b06

Download Submit
memory/1976-54-0x0000000075311000-0x0000000075313000-memory.dmp

Filesize
8KB

Download
memory/1976-57-0x00000000004A0000-0x00000000004A8000-memory.dmp

Filesize
32KB

Download
memory/1976-64-0x00000000004C0000-0x00000000004C9000-memory.dmp

Filesize
36KB

Download