fa7a0e565149420368b87344656836ef69e833c6fc96a3b1fd9a9e7dfd7b959e

Analysis

max time kernel
87s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2024, 02:33

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General

Target

2024-04-11_5bc7368c517c0e71d0ca05314f7504ed_cryptolocker.exe
Size

44KB
MD5

5bc7368c517c0e71d0ca05314f7504ed
SHA1

b4dc4614789e47cd2b5d2b65453c3445232b4ad0
SHA256

fa7a0e565149420368b87344656836ef69e833c6fc96a3b1fd9a9e7dfd7b959e
SHA512

12fa09ae2ffc0151f0745d43f92ace5494affdb6ed6a6dd28d67eefbf16e0c754eaadbdc02522107fb61bc79a91208d23905e54cc61790bd2b1ae689d0829d04
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFp1Yvb9wAa:bxNrC7kYo1Fxf3s05rwxbF7Yvb0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000231e9-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-04-11_5bc7368c517c0e71d0ca05314f7504ed_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
1004	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 5088 wrote to memory of 1004	5088	2024-04-11_5bc7368c517c0e71d0ca05314f7504ed_cryptolocker.exe	87
PID 5088 wrote to memory of 1004	5088	2024-04-11_5bc7368c517c0e71d0ca05314f7504ed_cryptolocker.exe	87
PID 5088 wrote to memory of 1004	5088	2024-04-11_5bc7368c517c0e71d0ca05314f7504ed_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-11_5bc7368c517c0e71d0ca05314f7504ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_5bc7368c517c0e71d0ca05314f7504ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5088
- 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:1004

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
44KB

MD5
9d5566177987175322cf549993ad2191

SHA1
534e841f15b877010d30fb4c4a91201b1a96e79e

SHA256
a7778ddea7c44770e65eca106618285f91d642dfd3e4276856591deb53df345e

SHA512
7c4c91e0f77e4116be0d07de5734672c309a4cab84be2185df0f00a64af790193aec680d178d033e3f5c2c8b676402c435adcc5d580a2ac25691bf268577cb9c

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/1004-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1004-23-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/5088-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/5088-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/5088-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download