82d0832a3524ace8fdbe936f61a01061cb270731ef28ea791c5e19f751e037fe

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
28/04/2024, 11:55

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General

Target

2024-04-28_fab11d14df33cfd72ac71943b0f71b01_cryptolocker.exe
Size

27KB
MD5

fab11d14df33cfd72ac71943b0f71b01
SHA1

d1739cf23b64469fa90ccbabc6961b089af61b50
SHA256

82d0832a3524ace8fdbe936f61a01061cb270731ef28ea791c5e19f751e037fe
SHA512

59e6bab614494a49146db1644274583fb3f28aafa6cecb3f27fcc6da1ea8141a143a9298a749b178a10793dbd4a474c8791c1aa7c0e4c9917fa8bbba0d262888
SSDEEP

384:qxOZzyjOnqGAs+8ULueO4NdE8tOOtEvwDpjqIGRYK1sGGYkxOqe:q0ZziOWwULueOSdE8tOOtEvwDpjeYe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2832-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000015c85-11.dat	CryptoLocker_rule2
behavioral1/memory/2832-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2800-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2832-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2800-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2832-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000015c85-11.dat	UPX
behavioral1/memory/2832-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2800-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2800	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2832	2024-04-28_fab11d14df33cfd72ac71943b0f71b01_cryptolocker.exe

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 2832 wrote to memory of 2800	2832	2024-04-28_fab11d14df33cfd72ac71943b0f71b01_cryptolocker.exe	28
PID 2832 wrote to memory of 2800	2832	2024-04-28_fab11d14df33cfd72ac71943b0f71b01_cryptolocker.exe	28
PID 2832 wrote to memory of 2800	2832	2024-04-28_fab11d14df33cfd72ac71943b0f71b01_cryptolocker.exe	28
PID 2832 wrote to memory of 2800	2832	2024-04-28_fab11d14df33cfd72ac71943b0f71b01_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_fab11d14df33cfd72ac71943b0f71b01_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_fab11d14df33cfd72ac71943b0f71b01_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2832
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2800

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
27KB

MD5
88344045739abbee6e59d0ec6de1760f

SHA1
49b715c5131e1d6fda89bbc5d821b53b5f3d2c3f

SHA256
8f173dc3dd65f6928235fe3dd72b99d8a5fdf50fc0944d7245f19285d2a11f5b

SHA512
c9d5fdcfbfbfdfa68f831cd47cd9e1e4de8d7c25da4d13500d3229ea44aebf0488fd64dfa8eb020d1f6a35d0fe8b2c41fcdd27a9bb9cb4e66f9b57e45ed94cbc

Download Submit
memory/2800-25-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2800-18-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2800-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2832-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2832-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2832-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2832-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2832-16-0x0000000001DD0000-0x0000000001DE0000-memory.dmp

Filesize
64KB

Download
memory/2832-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download