43177e424cdf9b624dc690cd0c4c5899cf14e1a4f8526dacfebbc2bb0a047b54

Analysis

max time kernel
147s
max time network
151s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 09:34

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General

Target

2024-02-12_2a10f29c37c5522b928d575d400c58d8_cryptolocker.exe
Size

43KB
MD5

2a10f29c37c5522b928d575d400c58d8
SHA1

4ff66ab91986436fb96418da5f0286c6e0f20e3a
SHA256

43177e424cdf9b624dc690cd0c4c5899cf14e1a4f8526dacfebbc2bb0a047b54
SHA512

081430428d3c3fda39976b99926e881f814290306cea73533cc4d76f9f34a3471f23a7b3c0aff2f30c843fe3e3296f7518f2f8cac9564e5b6e54e372b8b5ce58
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvyLUVm7:79mqyNhQMOtEvwDpjBzckpi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1224-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012251-11.dat	CryptoLocker_rule2
behavioral1/memory/1224-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2136-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1224-13-0x0000000002220000-0x000000000222F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1224-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012251-11.dat	CryptoLocker_set1
behavioral1/memory/1224-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2136-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1224-13-0x0000000002220000-0x000000000222F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2136	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1224	2024-02-12_2a10f29c37c5522b928d575d400c58d8_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 1224 wrote to memory of 2136	1224	2024-02-12_2a10f29c37c5522b928d575d400c58d8_cryptolocker.exe	28
PID 1224 wrote to memory of 2136	1224	2024-02-12_2a10f29c37c5522b928d575d400c58d8_cryptolocker.exe	28
PID 1224 wrote to memory of 2136	1224	2024-02-12_2a10f29c37c5522b928d575d400c58d8_cryptolocker.exe	28
PID 1224 wrote to memory of 2136	1224	2024-02-12_2a10f29c37c5522b928d575d400c58d8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-12_2a10f29c37c5522b928d575d400c58d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_2a10f29c37c5522b928d575d400c58d8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2136

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
43KB

MD5
be11e7eb271eb625b77ba8c8d31b365b

SHA1
cc34c56cf601b8a1edaa8ea929081dc7c53341ff

SHA256
fe37b00db7edb8b877f4bd69f1105d1bf6f78c4809d6754ebbb32ed9faa21b70

SHA512
03b42532764946a70da635f7956c70eed7416c61dd6abefe806b857a79e03e2ca7e0818ed0cd314f23442a64958a9fe28e2e1e29f83e4f5cfd6872897e21ee8c

Download Submit
memory/1224-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1224-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1224-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1224-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1224-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1224-13-0x0000000002220000-0x000000000222F000-memory.dmp

Filesize
60KB

Download
memory/2136-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2136-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2136-26-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download