26207de13d0ec740232d099299b1df89c9f011db82f46f7166950e7818c012e0

Analysis

max time kernel
141s
max time network
143s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/02/2024, 16:37

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General

Target

2024-02-27_e850edd33b3649b65111dec5d92ba44a_cryptolocker.exe
Size

31KB
MD5

e850edd33b3649b65111dec5d92ba44a
SHA1

7aad0ce1995286f1f52e37f9dcd43075b2579f56
SHA256

26207de13d0ec740232d099299b1df89c9f011db82f46f7166950e7818c012e0
SHA512

f30262a0449f8ab66937d2774c851d213fad807f8fe35f42f5c9f5efb71545ea749d7c821a3a4645a0abbb490e7ff28a739e0e306beb0fd132f5f3c138cfeb95
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tH3ME:q0zizzOSxMOtEvwDpj/arqH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/files/0x000d00000000e655-24.dat	CryptoLocker_rule2
behavioral1/memory/2396-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3048-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3048-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2396-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2396-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3048-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2396-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/files/0x000d00000000e655-24.dat	UPX
behavioral1/memory/2396-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3048-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3048-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2396-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2396	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3048	2024-02-27_e850edd33b3649b65111dec5d92ba44a_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 3048 wrote to memory of 2396	3048	2024-02-27_e850edd33b3649b65111dec5d92ba44a_cryptolocker.exe	1
PID 3048 wrote to memory of 2396	3048	2024-02-27_e850edd33b3649b65111dec5d92ba44a_cryptolocker.exe	1
PID 3048 wrote to memory of 2396	3048	2024-02-27_e850edd33b3649b65111dec5d92ba44a_cryptolocker.exe	1
PID 3048 wrote to memory of 2396	3048	2024-02-27_e850edd33b3649b65111dec5d92ba44a_cryptolocker.exe	1

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
1⤵
- Executes dropped EXE
PID:2396

C:\Users\Admin\AppData\Local\Temp\2024-02-27_e850edd33b3649b65111dec5d92ba44a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-27_e850edd33b3649b65111dec5d92ba44a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3048

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

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

Filesize
32KB

MD5
0825416c185b14145968833807ee5196

SHA1
49fc15900cbc7aae29b4e62f9ced377b6c8ba400

SHA256
a5ce6da83019afa9a9c205921f4820c6a0885712fba06ead8171bbce2b286fb8

SHA512
1b3d624ee3fcbfdeeaef107f63d744e37e07081cc4a0f9c73d0e71f558b82ba9cbec0c762ac44fe9232b76fb2468e6d538b2d7d5d0c8b37ae7f3fbb70490f6f0

Download Submit
memory/2396-25-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2396-18-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2396-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2396-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3048-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3048-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3048-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/3048-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3048-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download