877fe0ac86d9f51e77e0507bd843047644f4035e000b950096cf87811771dbf1

Analysis

max time kernel
134s
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
26/05/2024, 17:43

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General

Target

2024-05-26_08cad77b1496db3da7bdcb7aa8bcdf2a_cryptolocker.exe
Size

34KB
MD5

08cad77b1496db3da7bdcb7aa8bcdf2a
SHA1

21476ae83c3f0b36b42db3e59aa020970b7941d8
SHA256

877fe0ac86d9f51e77e0507bd843047644f4035e000b950096cf87811771dbf1
SHA512

ca067fc377d3473f37803431d952f1fc15e8c68898b3001c8be49cae1b3c8f1f8893a272b6f9ec0667481268a0bbe1285403d47f4185812f9b388553a66e258c
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos51:bxNrC7kYo1Fxf2rYJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000002339a-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	2024-05-26_08cad77b1496db3da7bdcb7aa8bcdf2a_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
4828	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 5008 wrote to memory of 4828	5008	2024-05-26_08cad77b1496db3da7bdcb7aa8bcdf2a_cryptolocker.exe	84
PID 5008 wrote to memory of 4828	5008	2024-05-26_08cad77b1496db3da7bdcb7aa8bcdf2a_cryptolocker.exe	84
PID 5008 wrote to memory of 4828	5008	2024-05-26_08cad77b1496db3da7bdcb7aa8bcdf2a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-26_08cad77b1496db3da7bdcb7aa8bcdf2a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_08cad77b1496db3da7bdcb7aa8bcdf2a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5008
- 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:4828

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
b80699f72bf1638d659df6588432230f

SHA1
7497d1b5fbf00acb5630a8a63788f0cc0358064c

SHA256
e74b11693ea2d9dbe4856b5421cb33cd02119ee3445b3a984cdd770477a2f452

SHA512
8f915fbd7ca48f5654d62d8648db18c1627d9d39e3b1dbc9ce19aeafac9b9c984ece3acad7ce4ff1c47082a281e0afbb8c8e7f69535a980ab942c387493d0757

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/4828-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4828-23-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/5008-0-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/5008-1-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/5008-8-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download