965186964b84d3753c308705a02d05d611b2b42624e00714fcb26f9d1235e176

General

Target

2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe
Size

80KB
MD5

6ad3826b921d4b96ff30553348ea7571
SHA1

13763dddb3838632abf6db27b44c0e86674d50fe
SHA256

965186964b84d3753c308705a02d05d611b2b42624e00714fcb26f9d1235e176
SHA512

ca7924c20a7ee55cd5c44fe3a6ab3e2b1cd61219b4dd6bece1e4e3b33f0aa60ba7736f301af18ab97f935f54f37eae0098bf01c5d7052d8bf17311a906cc0e1b
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7W6:T6a+rdOOtEvwDpjN3

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000139e0-11.dat	CryptoLocker_rule2
behavioral1/memory/2856-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2856-16-0x0000000002A80000-0x0000000002A90000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2336-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2336-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b0000000139e0-11.dat	CryptoLocker_set1
behavioral1/memory/2856-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2856-16-0x0000000002A80000-0x0000000002A90000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2336-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2336-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b0000000139e0-11.dat	UPX
behavioral1/memory/2856-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2336-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2336-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2336	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2856	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b0000000139e0-11.dat	upx
behavioral1/memory/2856-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2336-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2336-27-0x0000000000500000-0x0000000000510000-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 2856 wrote to memory of 2336	2856	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe	28
PID 2856 wrote to memory of 2336	2856	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe	28
PID 2856 wrote to memory of 2336	2856	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe	28
PID 2856 wrote to memory of 2336	2856	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2336

Network

DNS

emrlogistics.com

asih.exe

Remote address:

8.8.8.8:53

Request

emrlogistics.com

IN A

Response

emrlogistics.com

IN CNAME

traff-4.hugedomains.com

traff-4.hugedomains.com

IN CNAME

hdr-nlb8-39c51fa8696874ee.elb.us-east-1.amazonaws.com

hdr-nlb8-39c51fa8696874ee.elb.us-east-1.amazonaws.com

IN A

3.94.41.167

hdr-nlb8-39c51fa8696874ee.elb.us-east-1.amazonaws.com

IN A

52.86.6.113

3.94.41.167:443

emrlogistics.com

asih.exe

152 B
3
52.86.6.113:443

emrlogistics.com

asih.exe

152 B
3
3.94.41.167:443

emrlogistics.com

asih.exe

152 B
3
52.86.6.113:443

emrlogistics.com

asih.exe

152 B
3
3.94.41.167:443

emrlogistics.com

asih.exe

152 B
3
52.86.6.113:443

emrlogistics.com

asih.exe

152 B
3
3.94.41.167:443

emrlogistics.com

asih.exe

152 B
3
52.86.6.113:443

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

3.94.41.167

52.86.6.113

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
80KB

MD5
528562e3ddd44c81331dcb75e7661c40

SHA1
ff47d745f8df3b097193d8d1812a5b57a6dcfe5b

SHA256
d2ad7b54dc3b63d21bc67af386313235307dba674c022ec80806df8d1dcd309c

SHA512
a9a8f21321da55c9134afa07080f394b3b69a27ecab7866da3a2e28e25453e7be4d870d37987f01e119cf668e5c46e90684abe0039f419102eaef2c2a0741a4c

Download Submit
memory/2336-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2336-19-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2336-26-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2336-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2856-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2856-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2856-3-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2856-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2856-16-0x0000000002A80000-0x0000000002A90000-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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