50e15c31a69415d3723c60780e20608c4093a28bcb03e3f83649d7ea0e3b954c

Analysis

max time kernel
152s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 06:32

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General

Target

2024-03-28_23bfd1cf518cbb937de8f6fd3521a66a_cryptolocker.exe
Size

32KB
MD5

23bfd1cf518cbb937de8f6fd3521a66a
SHA1

f969f6aae4fb7bbf44961976aa675ec704e99331
SHA256

50e15c31a69415d3723c60780e20608c4093a28bcb03e3f83649d7ea0e3b954c
SHA512

0fa4b77df2189710260c02efff58dcaae3893e4df1d04f2cbd43f60dcdc6d9527098b2adbacac42f857e392b671d0d38dad57484d4fdd75a83207f5926c3ee44
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tHbjyz:q0zizzOSxMOtEvwDpj/arqc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2968-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012249-11.dat	CryptoLocker_rule2
behavioral1/memory/1204-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2968-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1204-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1204-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2968-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1204-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2968-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0008000000012249-11.dat	UPX
behavioral1/memory/1204-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2968-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1204-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1204	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2968	2024-03-28_23bfd1cf518cbb937de8f6fd3521a66a_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 2968 wrote to memory of 1204	2968	2024-03-28_23bfd1cf518cbb937de8f6fd3521a66a_cryptolocker.exe	28
PID 2968 wrote to memory of 1204	2968	2024-03-28_23bfd1cf518cbb937de8f6fd3521a66a_cryptolocker.exe	28
PID 2968 wrote to memory of 1204	2968	2024-03-28_23bfd1cf518cbb937de8f6fd3521a66a_cryptolocker.exe	28
PID 2968 wrote to memory of 1204	2968	2024-03-28_23bfd1cf518cbb937de8f6fd3521a66a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_23bfd1cf518cbb937de8f6fd3521a66a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_23bfd1cf518cbb937de8f6fd3521a66a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1204

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
33KB

MD5
59bb36e46e9bf0f78c88a9c1e75508d2

SHA1
a70ee3a57ce4dfb8abc82f28f58b95df4a17d8bd

SHA256
c32ef29bf45ebd8b14aac0b1ca3f2289696abcea7d5df305a60e444124b97b1b

SHA512
b7f5b81416e900587cf51389ba3290ffc578d972a324dea3beecf7cc13f9e7e8f9c200a9e388440dd513afa462217f27328cd2171d4678efce7840f6f69ef764

Download Submit
memory/1204-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1204-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1204-20-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/1204-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2968-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2968-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2968-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2968-3-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2968-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download