33ab333feb99bfe70e29646243b13d5fb6ce4dd09eded018306ce6ef37f186af

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 19:32

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General

Target

2024-05-29_c722dd3046851e971d7937220e998ef5_cryptolocker.exe
Size

40KB
MD5

c722dd3046851e971d7937220e998ef5
SHA1

8c58172fb15c957126cd9e4842fa331fc8343755
SHA256

33ab333feb99bfe70e29646243b13d5fb6ce4dd09eded018306ce6ef37f186af
SHA512

97baa85a45b10f0f8cf7b19c9b1d0d054433b5a5a4d1770f56d71a4539433d840a8e3c8c91f7fd09d8d593112904af67ffd5a04e74abacf1abeea151ccd49ea5
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYf:qDdFJy3QMOtEvwDpjjWMl7Tu

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000014c67-11.dat	CryptoLocker_rule2
behavioral1/memory/3024-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2620-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000014c67-11.dat	CryptoLocker_set1
behavioral1/memory/3024-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2620-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000014c67-11.dat	UPX
behavioral1/memory/3024-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2620-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2620	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3024	2024-05-29_c722dd3046851e971d7937220e998ef5_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000014c67-11.dat	upx
behavioral1/memory/3024-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2620-27-0x0000000000500000-0x0000000000510000-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 3024 wrote to memory of 2620	3024	2024-05-29_c722dd3046851e971d7937220e998ef5_cryptolocker.exe	28
PID 3024 wrote to memory of 2620	3024	2024-05-29_c722dd3046851e971d7937220e998ef5_cryptolocker.exe	28
PID 3024 wrote to memory of 2620	3024	2024-05-29_c722dd3046851e971d7937220e998ef5_cryptolocker.exe	28
PID 3024 wrote to memory of 2620	3024	2024-05-29_c722dd3046851e971d7937220e998ef5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_c722dd3046851e971d7937220e998ef5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_c722dd3046851e971d7937220e998ef5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2620

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
40KB

MD5
63c54b50cb45e728f41a5f2d736cc18c

SHA1
1dbe2ba31e547b054672ad0125a8772d890069b2

SHA256
25d77970cec4216a7f8f9157090c5b25437a655e832da06e973e3b16320b3dee

SHA512
e710092cc778a5648317421fcdd7561582dc104b6f443eaea52a94f8e0a1c0d4c53ebd7724a9dfaa8687bc207d92ffcbaf4ffb049c2060151ecf5701c3e65ec8

Download Submit
memory/2620-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2620-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2620-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3024-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/3024-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3024-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3024-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3024-14-0x00000000024C0000-0x00000000024D0000-memory.dmp

Filesize
64KB

Download