33e6079963939d923ee3fd67a67c8b7ac0118dd5af0519e1653e2a6e349a35c7

General

Target

2024-01-23_962009837d609643f0b051438e86b85e_cryptolocker.exe
Size

63KB
MD5

962009837d609643f0b051438e86b85e
SHA1

8da1ac87ad2df2560ceed6c3bb2659e0fa1fd918
SHA256

33e6079963939d923ee3fd67a67c8b7ac0118dd5af0519e1653e2a6e349a35c7
SHA512

90850db497aeabd5d16998708148daaee154bb0ce6e0e1f6f6097ef2d9f0561ecff1ea1b013319d89af12e9c952b9a6ddbaf62ffb754f3f2021c606c24211132
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjY6Um:1nK6a+qdOOtEvwDpjX

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2948-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000013a1a-11.dat	CryptoLocker_rule2
behavioral1/memory/2828-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2948-14-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2828-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2948-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000013a1a-11.dat	CryptoLocker_set1
behavioral1/memory/2828-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2948-14-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2828-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2948-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000a000000013a1a-11.dat	UPX
behavioral1/memory/2828-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2948-14-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2828-27-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2828	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2948	2024-01-23_962009837d609643f0b051438e86b85e_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2948-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000a000000013a1a-11.dat	upx
behavioral1/memory/2828-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2948-14-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2828-27-0x0000000000500000-0x000000000050F311-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 2948 wrote to memory of 2828	2948	2024-01-23_962009837d609643f0b051438e86b85e_cryptolocker.exe	28
PID 2948 wrote to memory of 2828	2948	2024-01-23_962009837d609643f0b051438e86b85e_cryptolocker.exe	28
PID 2948 wrote to memory of 2828	2948	2024-01-23_962009837d609643f0b051438e86b85e_cryptolocker.exe	28
PID 2948 wrote to memory of 2828	2948	2024-01-23_962009837d609643f0b051438e86b85e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-23_962009837d609643f0b051438e86b85e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_962009837d609643f0b051438e86b85e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2828

Network

DNS

emrlogistics.com

asih.exe

Remote address:

8.8.8.8:53

Request

emrlogistics.com

IN A

Response

emrlogistics.com

IN CNAME

traff-5.hugedomains.com

traff-5.hugedomains.com

IN CNAME

hdr-nlb7-aebd5d615260636b.elb.us-east-1.amazonaws.com

hdr-nlb7-aebd5d615260636b.elb.us-east-1.amazonaws.com

IN A

54.161.222.85

hdr-nlb7-aebd5d615260636b.elb.us-east-1.amazonaws.com

IN A

34.205.242.146

54.161.222.85:443

emrlogistics.com

asih.exe

152 B
3
34.205.242.146:443

emrlogistics.com

asih.exe

152 B
3
54.161.222.85:443

emrlogistics.com

asih.exe

152 B
3
34.205.242.146:443

emrlogistics.com

asih.exe

152 B
3
54.161.222.85:443

emrlogistics.com

asih.exe

152 B
3
34.205.242.146:443

emrlogistics.com

asih.exe

152 B
3
54.161.222.85:443

emrlogistics.com

asih.exe

152 B
3
34.205.242.146:443

emrlogistics.com

asih.exe

52 B
1

8.8.8.8:53

emrlogistics.com

dns

asih.exe

62 B
192 B
1
1

DNS Request

emrlogistics.com

DNS Response

54.161.222.85

34.205.242.146

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
64KB

MD5
10041bde94933aa2eb4af6f5357fe59b

SHA1
d04ddeccaa0549088eee57b9384d9dae258c7c7d

SHA256
042439e8fdaf988305ea5d806cb3e0e868549dd878b6e46a7abf182284d7ebbe

SHA512
b9715ca0ae286782a5edf63e1e92d4439f914871e7cd49a1ad71aa0097d1297b56dcf8630c284ff41eb064763f4ba0c1775697ed5c1797c512c10b19221627ab

Download Submit
memory/2828-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2828-20-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2828-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2948-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2948-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2948-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2948-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2948-17-0x00000000005F0000-0x0000000000600000-memory.dmp

Filesize
64KB

Download
memory/2948-14-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2948-28-0x00000000005F0000-0x0000000000600000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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Downloads

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