7a27040535ed90ca17a7286f41218c85f93b931fdf894a80e268f92063edbc36

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29-04-2024 23:51

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General

Target

2024-04-29_d33f7a40deb457cd34c8d567024c932d_cryptolocker.exe
Size

37KB
MD5

d33f7a40deb457cd34c8d567024c932d
SHA1

c5177c283479ccf3abb8f025219c8f6a77c8891c
SHA256

7a27040535ed90ca17a7286f41218c85f93b931fdf894a80e268f92063edbc36
SHA512

4d5d1c51bed7110190b4409c924dcd1e14ee4d8c723d063bad394dba755074b6681bad46affd140cb530799391c53b5c1f7bc4398dcadf7d3d367c0c167ad5ea
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36xr:bc/y2lLRU6zA6lr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023bb2-12.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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-29_d33f7a40deb457cd34c8d567024c932d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2760	rewok.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 1308 wrote to memory of 2760	1308	2024-04-29_d33f7a40deb457cd34c8d567024c932d_cryptolocker.exe	84
PID 1308 wrote to memory of 2760	1308	2024-04-29_d33f7a40deb457cd34c8d567024c932d_cryptolocker.exe	84
PID 1308 wrote to memory of 2760	1308	2024-04-29_d33f7a40deb457cd34c8d567024c932d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-29_d33f7a40deb457cd34c8d567024c932d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_d33f7a40deb457cd34c8d567024c932d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1308
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2760

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\rewok.exe

Filesize
37KB

MD5
1bc58213537a5c755992419aa1e44a6c

SHA1
1bd9af2819a93d71e8fa0dedb19bba1ed81e0c1d

SHA256
60c0f9811c631b03fb7d320ae9c10b75be27ee12ad8187530753e6120cc2e6f4

SHA512
ecaab92da1f71b39e35b9b0e144f83c5451a3c78d33f05e3c5b8f6cd0d50df72a51352f35f2b7fa693cc1c2ece3eb79793044123673cf92fafb95f1eb36a68c5

Download Submit
memory/1308-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1308-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1308-8-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2760-25-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download