a262fa7137f55829bb65057fdfa0bcbd91e5f3c40ea136b4432d2541d97ef6f2

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
29/03/2024, 03:25

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General

Target

2024-03-29_01bb0e22ada23acd462ad3393ebbabdf_cryptolocker.exe
Size

50KB
MD5

01bb0e22ada23acd462ad3393ebbabdf
SHA1

6248749a570ad3865627d49e4a8bae9de109547e
SHA256

a262fa7137f55829bb65057fdfa0bcbd91e5f3c40ea136b4432d2541d97ef6f2
SHA512

1784c486f08e67a15b2aad4c57055927acbef5354d1d11848212ecc8a83499afeee87579c49070ca60b62ccd0c74914cf23aa41220eb87127986e50c928df224
SSDEEP

1536:nP+4zs2cPszL3MOtEvwDpj4Hy7B3g9CWuAxWLQI:m4Q2ckzIOtEvwDpj4HYv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001231a-11.dat	CryptoLocker_rule2
behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1028-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1028-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1028-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1028-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001231a-11.dat	UPX
behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1028-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1028-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1028	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-03-29_01bb0e22ada23acd462ad3393ebbabdf_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001231a-11.dat	upx
behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1028-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1028-27-0x0000000000500000-0x0000000000510000-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 2220 wrote to memory of 1028	2220	2024-03-29_01bb0e22ada23acd462ad3393ebbabdf_cryptolocker.exe	28
PID 2220 wrote to memory of 1028	2220	2024-03-29_01bb0e22ada23acd462ad3393ebbabdf_cryptolocker.exe	28
PID 2220 wrote to memory of 1028	2220	2024-03-29_01bb0e22ada23acd462ad3393ebbabdf_cryptolocker.exe	28
PID 2220 wrote to memory of 1028	2220	2024-03-29_01bb0e22ada23acd462ad3393ebbabdf_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-29_01bb0e22ada23acd462ad3393ebbabdf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_01bb0e22ada23acd462ad3393ebbabdf_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1028

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\misid.exe

Filesize
50KB

MD5
a0e26306def5b29efa5f3611dd7eef6c

SHA1
c60222f0ffcf735fb4bcfc7bfa2c162caee56d74

SHA256
b07fd707fd34dc00eb30367677f3900ee0a0ac35993858761a7ae9fbdb8172ce

SHA512
982f886dd69d1b76328699015c41be72e4fb251eddf5529325e644c673a7af7ad9570f799f018c50c8de447f8e42c0aa96b75f8377f8e937a37f75b43a1ac155

Download Submit
memory/1028-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1028-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1028-21-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1028-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2220-9-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-16-0x00000000006D0000-0x00000000006E0000-memory.dmp

Filesize
64KB

Download