5e6b3a5ecb998e582914f58c9ff5feaac50e473cb4e78e6dd6f4ee57f40ae975

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
11/02/2024, 17:25

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General

Target

2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe
Size

69KB
MD5

1d81e0ac20e19369e86f34b76b117ace
SHA1

c0e0eb3b6f88b47c4776f23f90e8ebca87133797
SHA256

5e6b3a5ecb998e582914f58c9ff5feaac50e473cb4e78e6dd6f4ee57f40ae975
SHA512

f202fc4793662f065371f82c5a2e0cd0c0e99bea5efd5c6b81558e5e168a1357880f977c4a047cc73f0f0f7a92c794d94b334a14d1a7b6a4acaa711d70a9531c
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUy:DW60sllyWOtEvwDpjwF854

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3416-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320f-13.dat	CryptoLocker_rule2
behavioral2/memory/3416-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3416-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002320f-13.dat	CryptoLocker_set1
behavioral2/memory/3416-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3636	asih.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 3416 wrote to memory of 3636	3416	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe	85
PID 3416 wrote to memory of 3636	3416	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe	85
PID 3416 wrote to memory of 3636	3416	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3636

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\asih.exe

Filesize
70KB

MD5
a2b783f264ad71e8e5d08ab428db2b11

SHA1
45aaec8261c6cdb42a67664d5c8c8328d9587b41

SHA256
e2c8b6c8dcd4e6bf6907276363e21cdef14b691a4819bf995d48a8100a75ff72

SHA512
2f417b7b431c28c98408367f8eddeb5ec0e31e31160e4e354fac865a20e60ee58954ba2e4a357f04de98d12b89e2f6f8df1970a87e2f3eb0f19957aba9c7e0b6

Download Submit
memory/3416-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3416-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3416-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3416-3-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3416-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3636-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download