6178ddb132f7c7962304a445969dad28d74f2e11ac166133e4206343fd7fcb9e

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
28/02/2024, 06:39

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General

Target

2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe
Size

102KB
MD5

a86b58c09be4602ef473448e023bc14f
SHA1

b6252bcca789422e827b8afa735d23d3ad8b7def
SHA256

6178ddb132f7c7962304a445969dad28d74f2e11ac166133e4206343fd7fcb9e
SHA512

1068b3dc3515d7808db1af940ff2f25652651f9423299e2df20f83c1f5163e80916560680b5655dbb0db652e5266cd9fd9778e7871aeefd7f56ea870c8a1ef2a
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviy6r:AnBdOOtEvwDpj6z3

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1204-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012266-11.dat	CryptoLocker_rule2
behavioral1/memory/1204-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2960-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1204-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012266-11.dat	CryptoLocker_set1
behavioral1/memory/1204-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2960-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1204-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000a000000012266-11.dat	UPX
behavioral1/memory/1204-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2960-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2960	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1204	2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1204-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a000000012266-11.dat	upx
behavioral1/memory/1204-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2960-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2960-26-0x0000000000500000-0x000000000050F000-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 1204 wrote to memory of 2960	1204	2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe	28
PID 1204 wrote to memory of 2960	1204	2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe	28
PID 1204 wrote to memory of 2960	1204	2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe	28
PID 1204 wrote to memory of 2960	1204	2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2960

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
102KB

MD5
3fe42544b2427884e6e427be20cb2b5a

SHA1
58ceea1a25a42b1fd9466999bef10207b51e043c

SHA256
92a59496d627c158c4b4c0bdae9355611c165e95c5f9b5a28b084372cda6c5d0

SHA512
3ec795cebc80a959c43cb5af178abedf439619179aa981f2944005dc2d21bfb4aedb7bf989dc6eabd66201d54eb279ec50430a275705b03505e228b806a50d35

Download Submit
memory/1204-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1204-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1204-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1204-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1204-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2960-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2960-19-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2960-18-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download