b7006c119c79b20115c68981c7777ae59a9eedbfbbc5f19499a9342123fcfa44

Analysis

max time kernel
135s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 02:37

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General

Target

2024-06-05_638d5701d4d56a9dc860c8d0bb99ba44_cryptolocker.exe
Size

34KB
MD5

638d5701d4d56a9dc860c8d0bb99ba44
SHA1

204bf808d3c3ca3fef289220e0e4b41d06961d04
SHA256

b7006c119c79b20115c68981c7777ae59a9eedbfbbc5f19499a9342123fcfa44
SHA512

f5fadba66a3e1e64863308a868a4b4f0d86e8b42a388dd0e41aa450a0eeaf3990c987c31fb98bc96ffe14ca1a67adc94962e01cfb9f3244f9f88fc5e668f29f9
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5jm+:bxNrC7kYo1Fxf2rYPv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-05_638d5701d4d56a9dc860c8d0bb99ba44_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
3908	pissa.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 3908	2208	2024-06-05_638d5701d4d56a9dc860c8d0bb99ba44_cryptolocker.exe	83
PID 2208 wrote to memory of 3908	2208	2024-06-05_638d5701d4d56a9dc860c8d0bb99ba44_cryptolocker.exe	83
PID 2208 wrote to memory of 3908	2208	2024-06-05_638d5701d4d56a9dc860c8d0bb99ba44_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-05_638d5701d4d56a9dc860c8d0bb99ba44_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_638d5701d4d56a9dc860c8d0bb99ba44_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

C:\Users\Admin\AppData\Local\Temp\pissa.exe

Filesize
34KB

MD5
63dec4bb21fe60941c94b6dc09010ceb

SHA1
c21238b008a25d3e7eca8bb5f6dc8995ffa888a0

SHA256
0ed73c4151cb37060c6b23025f58b167d465b33b1e8554d0ea09555147e8ca72

SHA512
61114a4219f41d2912504efc3b43a17aac68d227c87d0a72524e70c27da6ef8aa1769b9d713c2496f8323077f0bbdf91df0fe851589ccefc836b027fb9684faa

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/2208-0-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/2208-1-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/2208-8-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3908-23-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3908-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download