9e72aafeae5617c2dbe24c4fdf571c928bcf2e5f940b7ac26d7dd4d5189ad558

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 06:04

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General

Target

2024-02-24_f95d4d754ef6ab082761424b917ad47c_cryptolocker.exe
Size

117KB
MD5

f95d4d754ef6ab082761424b917ad47c
SHA1

2180fb68c04e9df4cf90b6833a78e17b097f2bef
SHA256

9e72aafeae5617c2dbe24c4fdf571c928bcf2e5f940b7ac26d7dd4d5189ad558
SHA512

5611ac8a8966b88b11b770fe9d5643a604e476c2b0d1839d9b03a1fc2bf4a0e990f5df5b77d5489950c95625e259610062d02e6862668c40c07a5c17cc756fbe
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01Qam:z6a+CdOOtEvwDpjczw

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2944-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001418d-11.dat	CryptoLocker_rule2
behavioral1/memory/2944-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2972-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2972-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2944-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a00000001418d-11.dat	CryptoLocker_set1
behavioral1/memory/2944-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2972-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2972-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2944-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a00000001418d-11.dat	UPX
behavioral1/memory/2944-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2972-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2972-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2972	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2944	2024-02-24_f95d4d754ef6ab082761424b917ad47c_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2944-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a00000001418d-11.dat	upx
behavioral1/memory/2944-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2972-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2972-26-0x0000000000500000-0x0000000000510000-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 2944 wrote to memory of 2972	2944	2024-02-24_f95d4d754ef6ab082761424b917ad47c_cryptolocker.exe	28
PID 2944 wrote to memory of 2972	2944	2024-02-24_f95d4d754ef6ab082761424b917ad47c_cryptolocker.exe	28
PID 2944 wrote to memory of 2972	2944	2024-02-24_f95d4d754ef6ab082761424b917ad47c_cryptolocker.exe	28
PID 2944 wrote to memory of 2972	2944	2024-02-24_f95d4d754ef6ab082761424b917ad47c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-24_f95d4d754ef6ab082761424b917ad47c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_f95d4d754ef6ab082761424b917ad47c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2972

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
118KB

MD5
fe02b7a5b81ab9aa0323d66b98e12294

SHA1
108c5858bece82249d8cae616a3cdb000162c715

SHA256
8e930506feefd94733b74dee1b89f5d4f0953aecaaca27b174f8bf661761ed53

SHA512
bbcd06f3101e85c74e5ca020816cfed44078b34f44b317637f82e7e2661abe48e412a96f35d4ec078caccc014e254e6a3be6b8dff61c826a04965d09915952fb

Download Submit
memory/2944-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2944-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2944-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2944-3-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2944-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2972-18-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2972-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2972-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2972-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download