31a3b7f38a242a44673bfe21f519494f726a8f308d109ef6ce1938f97536dea2

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 21:46

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General

Target

2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe
Size

48KB
MD5

d959b0da16c0a66caa2ab5e0437792ba
SHA1

1ef431b36ddca16f1cc76d88d3be48bc0b9ecb1d
SHA256

31a3b7f38a242a44673bfe21f519494f726a8f308d109ef6ce1938f97536dea2
SHA512

1f75b321d98d6324bd08eac71cc515e44c8287d5274600910d872319b6efc0fa206bbfac37a36524eea8ee16f3e3334bf93016490e30f3314ad45058e51a4d97
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcg:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1920-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1920-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2612-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1920-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1920-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2612-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2612 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe

pid process

1920 2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2612	asih.exe

pid	process
1920	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe

description	pid	process	target process
PID 1920 wrote to memory of 2612	1920	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe	asih.exe
PID 1920 wrote to memory of 2612	1920	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe	asih.exe
PID 1920 wrote to memory of 2612	1920	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe	asih.exe
PID 1920 wrote to memory of 2612	1920	2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_d959b0da16c0a66caa2ab5e0437792ba_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1920

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
48KB

MD5
aecc839be1907dbf4716bfc7d7a11e0f

SHA1
2878e4eba779e01bb26291f994c98f387fc90b2a

SHA256
d0fb95fa134f7c122020ceb18d28bb3ea96517fa4d0fd7a729bbf2e2282eecf6

SHA512
c14398ae12ed45ba97a0c311d6ff14c22241fc7b95a17849c149131b6f0c08311d9c68c717455a5378bc4eb9e312723a2a48568d6ecd6842c4e5896c5d263890

Download Submit
memory/1920-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1920-1-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1920-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1920-3-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1920-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2612-17-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2612-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2612-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download