a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590

Analysis

max time kernel
161s
max time network
173s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2022 09:49

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General

Target

a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe
Size

247KB
MD5

2bf5bb53aecb29ded19bf982a28f2a77
SHA1

dc3ad09104220460d4d1bd26b50ee33f5221873d
SHA256

a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590
SHA512

f633cb1b1be15142b9b54a8e10bac9d1b0601f4339f8277d22022cc7712f4c66534a4e8d19138c249e80d52dbab4583e0f84052fb0e54e82de88f2af81523ace
SSDEEP

6144:M75VB50aNosWWjOi8tXu1Xevfql2+6d93zGJ08QfP0ai9o3OxS2xk/R:K5VnKsWN+wGO89ai9UOZk

Score

8^/10

evasion persistence

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winx32 = "C:\\Windows\\system32\\bot\\lsrss.exe"	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1884	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\bot\lsrss.exe	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe
File opened for modification	C:\Windows\SysWOW64\bot\lsrss.exe	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe
File created	C:\Windows\SysWOW64\www\rel.txt	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4320 wrote to memory of 1884	4320	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe	84
PID 4320 wrote to memory of 1884	4320	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe	84
PID 4320 wrote to memory of 1884	4320	a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe	84

C:\Users\Admin\AppData\Local\Temp\a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe
"C:\Users\Admin\AppData\Local\Temp\a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4320
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\a3cc4e0a611bf32204395e0ce5df69b65c182e09e2f73c553111ec2621932590.exe" Ftp ENABLE
  2⤵
  - Modifies Windows Firewall
  PID:1884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4320-132-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

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memory/4320-134-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

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