fb3af65cdfc93db0779eefced5b4b8eaf50d531848bc3a80c663aaee96b807a9

Analysis

max time kernel
137s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
05-05-2024 07:46

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General

Target

2024-05-05_df744e96d056341b1503b35b468dd14e_cryptolocker.exe
Size

32KB
MD5

df744e96d056341b1503b35b468dd14e
SHA1

e1631c56970e2a3348a97b33d2f2246e60849cf0
SHA256

fb3af65cdfc93db0779eefced5b4b8eaf50d531848bc3a80c663aaee96b807a9
SHA512

ea5cded4ce670ecee50f7fa3e70d55a58856ac3913193b1da6ca2f7443faa215cc2fa9125713e1c31fbf56369542486e808be1949467c9763800a4a15c697be7
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5jJ:bxNrC7kYo1Fxf2rYPJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b91-12.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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	pissa.exe
Key value queried	\REGISTRY\USER\S-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-05-05_df744e96d056341b1503b35b468dd14e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3840	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 1360 wrote to memory of 3840	1360	2024-05-05_df744e96d056341b1503b35b468dd14e_cryptolocker.exe	83
PID 1360 wrote to memory of 3840	1360	2024-05-05_df744e96d056341b1503b35b468dd14e_cryptolocker.exe	83
PID 1360 wrote to memory of 3840	1360	2024-05-05_df744e96d056341b1503b35b468dd14e_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-05_df744e96d056341b1503b35b468dd14e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-05_df744e96d056341b1503b35b468dd14e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1360
- 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:3840

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
32KB

MD5
05516452df0af988dcefff54f961e803

SHA1
98f151d099e2527cade2d4d6ea52097365d5ed62

SHA256
a7a04d37b6f38c025a28ef1f46957732595aff1de298f840bae182af6ebd4bd3

SHA512
8a3a5eaca4fea4eea332fb6a6078a918be9d4fc75d429b36bec9964a08e005dd12e2b7593d9e229f0168ae61b55f1c86dea02afcf9c5765f9a287c32d7d5b768

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/1360-0-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/1360-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/1360-8-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/3840-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3840-23-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download