f844fc8c18bc78b2059a9b8e4e8273f05361c7f2fbc265c4640485d91d6a7acd

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
04/06/2024, 04:51

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General

Target

2024-06-04_9b591aa591b5b3297a54a5e216469145_cryptolocker.exe
Size

49KB
MD5

9b591aa591b5b3297a54a5e216469145
SHA1

5b162219c284f0b3996844da2f2e6daa206ef550
SHA256

f844fc8c18bc78b2059a9b8e4e8273f05361c7f2fbc265c4640485d91d6a7acd
SHA512

29cd2440db21e88c472aec72172ab2cf02f900bedbbbde017e110bd11a23af6171b48ca5694fd6ad86a39cc998dbcf07c1663250fed2ed6655923500fe89ad01
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcc1a:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0007000000012120-11.dat	CryptoLocker_rule2
behavioral1/memory/1276-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1704-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1276-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0007000000012120-11.dat	CryptoLocker_set1
behavioral1/memory/1276-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1704-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1276-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1276	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1704	2024-06-04_9b591aa591b5b3297a54a5e216469145_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 1276	1704	2024-06-04_9b591aa591b5b3297a54a5e216469145_cryptolocker.exe	28
PID 1704 wrote to memory of 1276	1704	2024-06-04_9b591aa591b5b3297a54a5e216469145_cryptolocker.exe	28
PID 1704 wrote to memory of 1276	1704	2024-06-04_9b591aa591b5b3297a54a5e216469145_cryptolocker.exe	28
PID 1704 wrote to memory of 1276	1704	2024-06-04_9b591aa591b5b3297a54a5e216469145_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-04_9b591aa591b5b3297a54a5e216469145_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_9b591aa591b5b3297a54a5e216469145_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1276

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
49KB

MD5
a6c96494c513fb1276f475bc25fe4ba6

SHA1
18462c3de3279f836677477b5ef21b4c3847a9bd

SHA256
34e02d2239befb054b6e9ae711d934ec5bac3cf9331aa2b8426aed762a7b6be7

SHA512
e6f45df27d5bd8515946f8d490c6f235158a56461bb64c7784aef96b23ed25c6e8e45535124a735b2b770240bc42f69adf6d8f8be9300cb8055df5d8f268abcc

Download Submit
memory/1276-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1276-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1276-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1276-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1704-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1704-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1704-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1704-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1704-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download