e1b86dadd702b0ad1841c9db893a5d531d9eef71a4de32449ab2e47251f9e0fe

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 01:28

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General

Target

2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe
Size

47KB
MD5

b5dd3aebebf1a6ea209ef302a20faad2
SHA1

d8d8971cb1aa6c5021d5e0b562332a109df298d3
SHA256

e1b86dadd702b0ad1841c9db893a5d531d9eef71a4de32449ab2e47251f9e0fe
SHA512

69157c240c4c039420b607777f7c354ab46cb36063b4ea46b6101a0119621472a925487338223d20b4bbe6e36242b59b83e0d494fd55f5ad20e10038d608cbd9
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2VE:79inqyNR/QtOOtEvwDpjBKccJVODvy3d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/988-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2264-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/988-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/988-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2264-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/988-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2264 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe

pid process

988 2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2264	asih.exe

pid	process
988	2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe

description	pid	process	target process
PID 988 wrote to memory of 2264	988	2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe	asih.exe
PID 988 wrote to memory of 2264	988	2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe	asih.exe
PID 988 wrote to memory of 2264	988	2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe	asih.exe
PID 988 wrote to memory of 2264	988	2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_b5dd3aebebf1a6ea209ef302a20faad2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:988

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2264

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
8d88818dbcb8dfd39b8583aac0519915

SHA1
58443c0ece504ac17ccf3252e1809c836fa80db3

SHA256
0dc87282ee076bd6934b74847bb40560b5358e1a9b4719f4bd162efe37fca307

SHA512
5c074969079952177fc0665ca2bfa57e3c7b7685180dbaf9a689228bf3fcf360b12bf18225fe134b904c0071934813b6e2f29118399c7e4aa26c78495088cebf

Download Submit
memory/988-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/988-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/988-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/988-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/988-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2264-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2264-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download