691bd76a801ffa36123118d6dd30d2e2b4ddc627665655b6fa1f83035aaa70c2

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
06/06/2024, 07:24

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General

Target

2024-06-06_59a1e256ad6f2117e8c18c2942d3c1c6_cryptolocker.exe
Size

41KB
MD5

59a1e256ad6f2117e8c18c2942d3c1c6
SHA1

aaa4a4b0d5a8cd47f400749087b5f4dc8b39642c
SHA256

691bd76a801ffa36123118d6dd30d2e2b4ddc627665655b6fa1f83035aaa70c2
SHA512

0ad50a6e405a9d63c492e13212488c69cd245aea87292b1ad5fdeb506c0ea1f3cb7106f676d0ca863c3b1350ac7295fd4dd0cefb57417767d7105f68c509a092
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY/0p:qDdFJy3QMOtEvwDpjjWMl7TF

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/108-12-0x0000000002740000-0x0000000002750000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001225d-11.dat	CryptoLocker_rule2
behavioral1/memory/108-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2964-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/108-12-0x0000000002740000-0x0000000002750000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001225d-11.dat	CryptoLocker_set1
behavioral1/memory/108-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2964-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/108-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/108-12-0x0000000002740000-0x0000000002750000-memory.dmp	UPX
behavioral1/files/0x000b00000001225d-11.dat	UPX
behavioral1/memory/108-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2964-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2964	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
108	2024-06-06_59a1e256ad6f2117e8c18c2942d3c1c6_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/108-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/108-12-0x0000000002740000-0x0000000002750000-memory.dmp	upx
behavioral1/files/0x000b00000001225d-11.dat	upx
behavioral1/memory/108-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2964-27-0x0000000000500000-0x0000000000510000-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 108 wrote to memory of 2964	108	2024-06-06_59a1e256ad6f2117e8c18c2942d3c1c6_cryptolocker.exe	28
PID 108 wrote to memory of 2964	108	2024-06-06_59a1e256ad6f2117e8c18c2942d3c1c6_cryptolocker.exe	28
PID 108 wrote to memory of 2964	108	2024-06-06_59a1e256ad6f2117e8c18c2942d3c1c6_cryptolocker.exe	28
PID 108 wrote to memory of 2964	108	2024-06-06_59a1e256ad6f2117e8c18c2942d3c1c6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-06_59a1e256ad6f2117e8c18c2942d3c1c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_59a1e256ad6f2117e8c18c2942d3c1c6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:108
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2964

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
41KB

MD5
459d347093694055fb83c9cddc9ce2fe

SHA1
3df9f708eef8e9646c25bf4dcc4d7e3690e6134b

SHA256
01b8d919777bb77fc09156bf88b69815fd8e6fb27bc4dff00ac52b93546d7cf2

SHA512
9c6c0e1dd4205595eb2600d4c318a3daa806033e018130ceb449b579b0d76436b527c33c8c82ac97098149e2cc24e01d26f10d5f4871f1ca1279d594e3c1032f

Download Submit
memory/108-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/108-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/108-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/108-3-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/108-12-0x0000000002740000-0x0000000002750000-memory.dmp

Filesize
64KB

Download
memory/108-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2964-19-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2964-26-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2964-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download