70507ecf67dd7d07649eaeedca7fe5794624dbcad0e937de8cfeba45234d3674

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
01/05/2024, 06:34

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General

Target

2024-05-01_bf94d17bee81d14b035f884eca86b0a7_cryptolocker.exe
Size

47KB
MD5

bf94d17bee81d14b035f884eca86b0a7
SHA1

b36df4b7324bd0543d56b266ab9fe9f06520d478
SHA256

70507ecf67dd7d07649eaeedca7fe5794624dbcad0e937de8cfeba45234d3674
SHA512

8a254e32633acfad41caab4191bb14baa3d0ee2686ec4158646832887d6ebba3b550a4718032d48e2892cd08644498b179353d66542d1f07ef0a2856472813cb
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkcF:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4376-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d000000023b24-13.dat	CryptoLocker_rule2
behavioral2/memory/4376-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3480-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3480-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4376-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000d000000023b24-13.dat	CryptoLocker_set1
behavioral2/memory/4376-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3480-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3480-27-0x0000000000500000-0x000000000050B000-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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-05-01_bf94d17bee81d14b035f884eca86b0a7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3480	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 4376 wrote to memory of 3480	4376	2024-05-01_bf94d17bee81d14b035f884eca86b0a7_cryptolocker.exe	83
PID 4376 wrote to memory of 3480	4376	2024-05-01_bf94d17bee81d14b035f884eca86b0a7_cryptolocker.exe	83
PID 4376 wrote to memory of 3480	4376	2024-05-01_bf94d17bee81d14b035f884eca86b0a7_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-01_bf94d17bee81d14b035f884eca86b0a7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_bf94d17bee81d14b035f884eca86b0a7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3480

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
47KB

MD5
a95e353d3b9849812df6df231d8f4fbe

SHA1
10a7bde0d13a5fbd964b957998c1cd9f27251e6a

SHA256
29200d7a140b2c34c9ab042bdf45375597c891385e3b2b06a956c648fde8fd6d

SHA512
f250a71bb0c961a3775e3668d7234fc745806239d36d5ea7d8a65ecf13cfc1b10e6a5e13dfb53f5085de47048df7c86b97418129137e72382bdea080acc582e1

Download Submit
memory/3480-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3480-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3480-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3480-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4376-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4376-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4376-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4376-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4376-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download