e8705c2bbea7e5b35259da2b9211edc5199ad9d9bbb5d37aea92e7d27ff39fba

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 00:34

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General

Target

2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe
Size

38KB
MD5

8c7d5fa3aaa256b18bdc4a872bdd16df
SHA1

742e29c429aefde6d61d05a967837edf9c17051f
SHA256

e8705c2bbea7e5b35259da2b9211edc5199ad9d9bbb5d37aea92e7d27ff39fba
SHA512

0c17b58510f16948d420665134e5d750dbfb2cca149bbe5e9331f35267590ed3e745701f86338c44514a7002639100b8c0e5c5634bb3bba431d2b25b562cfbd4
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/UkRYzMAZ+mX:vj+jsMQMOtEvwDpj5HcSYP5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023281-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023281-12.dat	CryptoLocker_set1

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-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation	2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2940	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 3740 wrote to memory of 2940	3740	2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe	85
PID 3740 wrote to memory of 2940	3740	2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe	85
PID 3740 wrote to memory of 2940	3740	2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3740
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

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
38KB

MD5
edc43340da6a5c56e45ed1e9c014c086

SHA1
0b721657812be1d5b8635e8800dda598052df384

SHA256
18b5ccd58000a6a11be3bce7366534a5916e56eb7ec58f1e0aa2e2e0e91b0362

SHA512
b8b885167aa028d1160d45e9aa9bd2d000f9c8e79623db4a29bf3a8b526cf16faa73a1e2325a5bdd315d7792bab31db6d9fd06d416d7bb2a9dc91c6406e72cad

Download Submit
memory/2940-18-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2940-17-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3740-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3740-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3740-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download