e4fa77f1d9971919a4136097bb94e55422e8a8c056d0db640138bd166ec260ca

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-06-2024 04:04

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General

Target

2024-06-03_dfb990f38fe6639212bdd7dc21e5e705_cryptolocker.exe
Size

35KB
MD5

dfb990f38fe6639212bdd7dc21e5e705
SHA1

4f191ddeac7fe0173b1f1d3dc668fac6372e1c2d
SHA256

e4fa77f1d9971919a4136097bb94e55422e8a8c056d0db640138bd166ec260ca
SHA512

dffcdc445b5dec2ef16bcc7298af4a85d837a40ba4550fb5351acfc63632b776032250dc132fa08b4c6b1d7d28b56990bbf307858446d598221c883256e4cd07
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp7lB4:bxNrC7kYo1Fxf2rY1BB4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000002328e-11.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-03_dfb990f38fe6639212bdd7dc21e5e705_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

pid	Process
944	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 1696 wrote to memory of 944	1696	2024-06-03_dfb990f38fe6639212bdd7dc21e5e705_cryptolocker.exe	85
PID 1696 wrote to memory of 944	1696	2024-06-03_dfb990f38fe6639212bdd7dc21e5e705_cryptolocker.exe	85
PID 1696 wrote to memory of 944	1696	2024-06-03_dfb990f38fe6639212bdd7dc21e5e705_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-06-03_dfb990f38fe6639212bdd7dc21e5e705_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_dfb990f38fe6639212bdd7dc21e5e705_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1696
- 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:944

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
35KB

MD5
36115709b9feb469d33b74a024dfac55

SHA1
26594eaa5afcc42127ec5522b34f8fc0eecf66e6

SHA256
842f95f3bf6d6bad56faa5943ec991c84e8b507fec151a59adcb910199da7b73

SHA512
9c744af20d2b7b04e686a60dce86f11b2a564e3f320de93e83e0ba8c5f67c914244b48b51a1aecc54393f83d1a0b9d6676adfd0156f7e2107a6117689b94b8a7

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/944-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/1696-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/1696-1-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1696-8-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download