299c5577817ad7c686117e1aa137c9c11ab882523ab08dbd50526f638b707135

Analysis

max time kernel
89s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2024, 09:38

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General

Target

2024-01-26_fb63c487e03da577298748689073c39b_cryptolocker.exe
Size

53KB
MD5

fb63c487e03da577298748689073c39b
SHA1

ec0d86bdf515320875a4598e8841d9ba1e9f1022
SHA256

299c5577817ad7c686117e1aa137c9c11ab882523ab08dbd50526f638b707135
SHA512

14cd4b60415ef06ef90ee937d017c4a120781ff86ac3e45e381b6d462e04c67a9567a27e2879dc11a7e9f2956d5922e5d926f0f94958028e0cee1c8b1633d6a6
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCW1nw71TkhsiPn1YFv0itD:vj+jsMQMOtEvwDpj5HH1nw73KOFsiB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f2-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f2-12.dat	CryptoLocker_set1

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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-26_fb63c487e03da577298748689073c39b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4928	misid.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 1548 wrote to memory of 4928	1548	2024-01-26_fb63c487e03da577298748689073c39b_cryptolocker.exe	86
PID 1548 wrote to memory of 4928	1548	2024-01-26_fb63c487e03da577298748689073c39b_cryptolocker.exe	86
PID 1548 wrote to memory of 4928	1548	2024-01-26_fb63c487e03da577298748689073c39b_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-26_fb63c487e03da577298748689073c39b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_fb63c487e03da577298748689073c39b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4928

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\misid.exe

Filesize
54KB

MD5
881ff53c1dac05e5457817c6d5a0a4d0

SHA1
e04a69fef803aee10ba24c2d831b521c57a64147

SHA256
02d17b5301a2404e6d88dc8b0d0cc02d75cae5ac11a3c9cb598705b7d29ac96e

SHA512
4bb9fa00df7366f27c548ca1dc02f5e9e7d05cd22ed569aaf532d9c8954b615674037a6b1dac0714c685e32595035a631d3ced9336060ae7d5b1d893598ba21e

Download Submit
memory/1548-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1548-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1548-2-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/4928-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4928-20-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download