28c67d78a67eb0d400b501f4f41679bbcae73519eeb5c4d3d33d91c50cb34974

Analysis

max time kernel
149s
max time network
172s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
07/01/2024, 12:13

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General

Target

2024-01-06_9a304cef97658f13556139beb5706d56_cryptolocker.exe
Size

61KB
MD5

9a304cef97658f13556139beb5706d56
SHA1

84453165b01531a40fb673a00a04ec193c804a53
SHA256

28c67d78a67eb0d400b501f4f41679bbcae73519eeb5c4d3d33d91c50cb34974
SHA512

c2deccb7bd513fb0502e8e0f825a3c6396f58ff8190160f29c40c0a7b2c6f1b2977aa30684c6ecd9322bec2815c51a835d235ff77311a621d4e9e66f28ecf048
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjY6UW:1nK6a+qdOOtEvwDpjX

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2740	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2116	2024-01-06_9a304cef97658f13556139beb5706d56_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2116-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0009000000012266-11.dat	upx
behavioral1/memory/2116-12-0x0000000001E30000-0x0000000001E40000-memory.dmp	upx
behavioral1/memory/2116-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2740-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2740-27-0x0000000000500000-0x000000000050F311-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 2116 wrote to memory of 2740	2116	2024-01-06_9a304cef97658f13556139beb5706d56_cryptolocker.exe	28
PID 2116 wrote to memory of 2740	2116	2024-01-06_9a304cef97658f13556139beb5706d56_cryptolocker.exe	28
PID 2116 wrote to memory of 2740	2116	2024-01-06_9a304cef97658f13556139beb5706d56_cryptolocker.exe	28
PID 2116 wrote to memory of 2740	2116	2024-01-06_9a304cef97658f13556139beb5706d56_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-06_9a304cef97658f13556139beb5706d56_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-06_9a304cef97658f13556139beb5706d56_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2740

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
61KB

MD5
cc76c012ddaa2dd7c91b734ec122b88e

SHA1
c4e88848ffde38fc3a27611543eafe99d514830f

SHA256
44f299b6b7093c532a1beb98c82d09091c24a57f7d2f2f85807f90a1039c3459

SHA512
cdffb774c01cd5ff17222045df646a496ec442755cf67c94c2d3809e0000bc125bec4a9bdfb66d90f1cd42eafad281dd3a890ba192f042e5fe941f4b107a3a0f

Download Submit
memory/2116-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2116-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2116-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2116-7-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2116-12-0x0000000001E30000-0x0000000001E40000-memory.dmp

Filesize
64KB

Download
memory/2116-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2740-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2740-19-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2740-23-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2740-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download