2e9bba8319f8880f3e7d56278ed821537bf1b87831c4e0c058496aae23c143dc

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 09:37

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General

Target

2024-02-23_4fe765a8d2b07896dc4ca686b8506991_cryptolocker.exe
Size

71KB
MD5

4fe765a8d2b07896dc4ca686b8506991
SHA1

81cb7bc3a467af5e8e4be115604b1bfff1280d81
SHA256

2e9bba8319f8880f3e7d56278ed821537bf1b87831c4e0c058496aae23c143dc
SHA512

9046568868d5b8a5f4519a3f77bbc72fd06fafea6a2ed702dc09ee2b0fde3585c29b63f1753a3876822d951ac8e4cbdf9c9f864d126b3941132c8e41f57b2c4b
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1eSo:X6a+SOtEvwDpjBZYvQd2+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00c300000001e848-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00c300000001e848-12.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-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-23_4fe765a8d2b07896dc4ca686b8506991_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
212	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 4720 wrote to memory of 212	4720	2024-02-23_4fe765a8d2b07896dc4ca686b8506991_cryptolocker.exe	88
PID 4720 wrote to memory of 212	4720	2024-02-23_4fe765a8d2b07896dc4ca686b8506991_cryptolocker.exe	88
PID 4720 wrote to memory of 212	4720	2024-02-23_4fe765a8d2b07896dc4ca686b8506991_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-23_4fe765a8d2b07896dc4ca686b8506991_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_4fe765a8d2b07896dc4ca686b8506991_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:212

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
72KB

MD5
23675a5c90eaa66aec97b48078917e02

SHA1
63ad16fbfe268197988470e629b0e8ac3ad1b61e

SHA256
fdac77fb480a871d68c0039e73564097c019ada067e03e8cdd326faf821d4a14

SHA512
30cead4443662d7db61e75dcf44d950133eddbace1dc948e9925de2562e274c8096445a340e5e447f286a9435f2301c790912dd3c1acf93ee077e2cba1d03819

Download Submit
memory/212-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/212-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4720-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4720-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4720-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download