3a2d54a2ee7740c04c1e5c4ce7d225ce70365dee737575fa932746bf34ea23c4

Analysis

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

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 00:45

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General

Target

2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe
Size

64KB
MD5

aad4a88c8aeb9f7b8ed9bc07538eba37
SHA1

5e875e578c2e4389cc218c990fd1678b58f61d1d
SHA256

3a2d54a2ee7740c04c1e5c4ce7d225ce70365dee737575fa932746bf34ea23c4
SHA512

63e248486d8b0cea198ed8ab17aecb1a965440d8cda278379c09acc585cbc67df588838bc529724e3c023422a176a6d6dba0f2b8110018ab5f9aef9e394af185
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsih:BbdDmjr+OtEvwDpjM8Q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3000-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2168-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3000-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3000-8-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2168-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2168 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe

pid process

3000 2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2168	asih.exe

pid	process
3000	2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe

description	pid	process	target process
PID 3000 wrote to memory of 2168	3000	2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe	asih.exe
PID 3000 wrote to memory of 2168	3000	2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe	asih.exe
PID 3000 wrote to memory of 2168	3000	2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe	asih.exe
PID 3000 wrote to memory of 2168	3000	2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_aad4a88c8aeb9f7b8ed9bc07538eba37_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3000

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2168

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
64KB

MD5
30b878db4cb9c0dd10020862da157ab1

SHA1
a1929d73df73c3e65571a0ff091379d3fb48a0bf

SHA256
2bac15dc3971162d4468f4d97b2810e585077c4bda3163ece3a19eb4bd225e51

SHA512
b8e7499aebf4238b5f9bb5a7bc3aa663a7b328dad8ee2158c0f24bc7ca4a43283990142d05bf1865b8f97aa813f6515f4f726ccdbd20d08c6eb449a56cb4b98c

Download Submit
memory/2168-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2168-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2168-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3000-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/3000-1-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/3000-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/3000-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download