b3b345ee275d1dc329bea513450684965683925b8339d29a3833442548b6e731

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 01:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe
Size

48KB
MD5

ff0f5d33ef6ae3271c795df1f3138809
SHA1

3d43aa1d97d134dc65242034a0b2f6ff90d33dc3
SHA256

b3b345ee275d1dc329bea513450684965683925b8339d29a3833442548b6e731
SHA512

0537acfa5fee01b4351bb30a69ec4b2daf9d071c01ef6bd33505a4b725fc0cf0b30af6e81a592c60124cb1df8168634c7c607ca65fd834d1459f210eb1685867
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcb:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2752-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/3596-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2752-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3596-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2752-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/3596-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2752-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3596-27-0x0000000000500000-0x000000000050B000-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

Processes:

2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3596 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3596	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe

description	pid	process	target process
PID 2752 wrote to memory of 3596	2752	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe	asih.exe
PID 2752 wrote to memory of 3596	2752	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe	asih.exe
PID 2752 wrote to memory of 3596	2752	2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_ff0f5d33ef6ae3271c795df1f3138809_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2752

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3596

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
48KB

MD5
eab31dc6d1e21b853d81267811a1e396

SHA1
dae5340e6d7b01fc71c90bd3564481666a7fe967

SHA256
09f664756d0fc39dd1574207b9e788946a1f08a4c2f050103c121fbd674c22aa

SHA512
ad61b2a4f1e842c1c186ad91538db1a3920418fd1cfc1b2f26587c983c40f39d70216efad51968a8c2228be573a5fe4bccca7d2c94d31737d16bfc7c72ba7e0f

Download Submit
memory/2752-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2752-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2752-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2752-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2752-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3596-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3596-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3596-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3596-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download