3f6f912a288b0452ab16d06ea2a8f85ba833bf1f3ace0195770e797cb61ee0e6

Analysis

max time kernel
154s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03-02-2024 11:29

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General

Target

2024-02-03_5eca3d9d2bb3bcbe6b4ce3ec98da4f78_cryptolocker.exe
Size

37KB
MD5

5eca3d9d2bb3bcbe6b4ce3ec98da4f78
SHA1

11ee05c7ccdd2838c02a6a15aca22c9cd62e3cd9
SHA256

3f6f912a288b0452ab16d06ea2a8f85ba833bf1f3ace0195770e797cb61ee0e6
SHA512

0e72add2f4cfa82594f9f954605b9f707366ac327bc64ab92438730a751259e03a7b19289d1b39d20370290b8f781dc9b87a14ff94b646f1e07fcac86c979050
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3Oj:bxNrC7kYo1Fxf3s06gYj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023107-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-03_5eca3d9d2bb3bcbe6b4ce3ec98da4f78_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1476	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 380 wrote to memory of 1476	380	2024-02-03_5eca3d9d2bb3bcbe6b4ce3ec98da4f78_cryptolocker.exe	84
PID 380 wrote to memory of 1476	380	2024-02-03_5eca3d9d2bb3bcbe6b4ce3ec98da4f78_cryptolocker.exe	84
PID 380 wrote to memory of 1476	380	2024-02-03_5eca3d9d2bb3bcbe6b4ce3ec98da4f78_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-03_5eca3d9d2bb3bcbe6b4ce3ec98da4f78_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_5eca3d9d2bb3bcbe6b4ce3ec98da4f78_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:380
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:1476

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
37KB

MD5
aed364c328ed17f56eb7380276da7a97

SHA1
fe90f1ff22ee66a7f25b2bd61f8a41bd030318fd

SHA256
c4864fe0f0e7c90ba7ddcc7882decf1a13bf88d4cb7ad6a5e687d8c78248da7e

SHA512
8d4b60159243f7b03ae50f517224dbd3421a5ef3a6a075dbe91ab3484780ed09304d17b2d93fe4109aa5cd216c9b01baaa85734fd5de05cab6d807d4d9667282

Download Submit
memory/380-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/380-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/380-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download
memory/1476-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1476-18-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download