62d435aed54f22fdfc63ba967ee3d97ff2ab001a5cd84c55a09fd171107b160d

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 04:47

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General

Target

2024-03-28_999e49e3d337a40945561bbd0673a5ad_cryptolocker.exe
Size

31KB
MD5

999e49e3d337a40945561bbd0673a5ad
SHA1

354b836a1932858c9ed898591c5077fd1b1c0035
SHA256

62d435aed54f22fdfc63ba967ee3d97ff2ab001a5cd84c55a09fd171107b160d
SHA512

981d8bde33cf45a22c144a9458d53e120467a31d4c79d14538177eab60ac792aa010914eb92c30d56b33797cd5bacd72aef717c5d521129989c1345faaf048c6
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tHh:q0zizzOSxMOtEvwDpj/arqB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2216-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2216-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012243-11.dat	CryptoLocker_rule2
behavioral1/memory/2512-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2512-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2216-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2512-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2512-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2216-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2216-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012243-11.dat	UPX
behavioral1/memory/2512-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2512-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2512	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2216	2024-03-28_999e49e3d337a40945561bbd0673a5ad_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 2216 wrote to memory of 2512	2216	2024-03-28_999e49e3d337a40945561bbd0673a5ad_cryptolocker.exe	28
PID 2216 wrote to memory of 2512	2216	2024-03-28_999e49e3d337a40945561bbd0673a5ad_cryptolocker.exe	28
PID 2216 wrote to memory of 2512	2216	2024-03-28_999e49e3d337a40945561bbd0673a5ad_cryptolocker.exe	28
PID 2216 wrote to memory of 2512	2216	2024-03-28_999e49e3d337a40945561bbd0673a5ad_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_999e49e3d337a40945561bbd0673a5ad_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_999e49e3d337a40945561bbd0673a5ad_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2512

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

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Downloads

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

Filesize
31KB

MD5
977413513530358fa9b20c4ee0367dc0

SHA1
779580bc371a43e2f80de345b63b421d501e94a8

SHA256
6b14b314f71670fa03179b880bfc01c9048e1ad20209ad1086d257f55c8d9fa8

SHA512
38c80f3832a77b65d6422ef789ac7b86e04701129c8e7e2b56bcf05306a88c057b8f3810733f84914949797abd855b871fd265fa9471517d24e124997dfc7664

Download Submit
memory/2216-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2216-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2216-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2216-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2216-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2512-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2512-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2512-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download