0e30eb3685be1e646ec3373ad3d8dc8707e2e117d37510f0b8a8c88590ef36d0

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
20/05/2024, 00:55

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General

Target

2024-05-20_e0a79c7ad4aca9d731bd4373bbf9cc77_cryptolocker.exe
Size

77KB
MD5

e0a79c7ad4aca9d731bd4373bbf9cc77
SHA1

779dca21bed2b29c85fe074becb4615b61b19fee
SHA256

0e30eb3685be1e646ec3373ad3d8dc8707e2e117d37510f0b8a8c88590ef36d0
SHA512

49691cc2dd96974694d14ffba0c51e826566edc8a6ad6d7dce9558b24e6a12ed741f6cd367498328b7fed49b78cf7c293a6260a9f25fe81a6ef66a5d060513a9
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxY:T6a+rdOOtEvwDpjNtHPP

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f00000001214d-11.dat	CryptoLocker_rule2
behavioral1/memory/1660-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2368-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000f00000001214d-11.dat	CryptoLocker_set1
behavioral1/memory/1660-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2368-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000f00000001214d-11.dat	UPX
behavioral1/memory/1660-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2368-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2368	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1660	2024-05-20_e0a79c7ad4aca9d731bd4373bbf9cc77_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000f00000001214d-11.dat	upx
behavioral1/memory/1660-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2368-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 1660 wrote to memory of 2368	1660	2024-05-20_e0a79c7ad4aca9d731bd4373bbf9cc77_cryptolocker.exe	28
PID 1660 wrote to memory of 2368	1660	2024-05-20_e0a79c7ad4aca9d731bd4373bbf9cc77_cryptolocker.exe	28
PID 1660 wrote to memory of 2368	1660	2024-05-20_e0a79c7ad4aca9d731bd4373bbf9cc77_cryptolocker.exe	28
PID 1660 wrote to memory of 2368	1660	2024-05-20_e0a79c7ad4aca9d731bd4373bbf9cc77_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-20_e0a79c7ad4aca9d731bd4373bbf9cc77_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_e0a79c7ad4aca9d731bd4373bbf9cc77_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2368

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
78KB

MD5
5acfab63bc736d0b1e5b6b8bd415a7eb

SHA1
eecf237abe2c24abffcde99283f09e75f3812828

SHA256
69f46b569218dc40ecb05d4546f65d218a117e57fc60bc5c91922d6e52eec4aa

SHA512
8b5db20f1316544c08c5d572fa7a3d5fead1e344f28b490fec64a6cd18cce075b37b8e5a33adf9c35eb5b62ab0e09b560ebf80ad8fca059daead3a5ac3ad82a9

Download Submit
memory/1660-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1660-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1660-3-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1660-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1660-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2368-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2368-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2368-25-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download