djvu | 841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1

General

Target

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
Size

759KB
MD5

617b2beb7fd1f162b3a552a2906b5b1b
SHA1

c542b59788570f5334d4ea9b3c85661ee01f0fd3
SHA256

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1
SHA512

c17cd4c6b05a38b69cffb655a7cb6c27a38f33ed95e43985beb89c7a7ff99a3903f146fd1e4f6398ce5dbf5cffd96a47606c8a6919b5b6f23c30e6c0b90532c0

Score

10^/10

djvu discovery persistence ransomware suricata

Malware Config

Extracted

Family

djvu

C2

http://cjto.top/nddddhsspen6/get.php

Attributes

extension
.geno
offline_id
Gq9C3wfB3EovXBFkGxv1b5wkUKUxVy1x63fasTt1
payload_url
http://cjto.top/files/penelop/updatewin1.exe
http://cjto.top/files/penelop/updatewin2.exe
http://cjto.top/files/penelop/updatewin.exe
http://cjto.top/files/penelop/3.exe
http://cjto.top/files/penelop/4.exe
http://cjto.top/files/penelop/5.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-ZLZ4pVnuS4 Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: helpmanager@mail.ch Reserve e-mail address to contact us: restoremanager@airmail.cc Your personal ID: 0248Oowhu34

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/396-131-0x0000000000C20000-0x0000000000D3A000-memory.dmp	family_djvu
behavioral2/memory/396-132-0x0000000000400000-0x0000000000A12000-memory.dmp	family_djvu
behavioral2/memory/816-141-0x0000000000400000-0x0000000000A12000-memory.dmp	family_djvu
behavioral2/memory/2440-145-0x0000000000400000-0x0000000000A12000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
suricata: ET MALWARE APT-C-23 Activity (GET)
suricata: ET MALWARE APT-C-23 Activity (GET)
suricata
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata
suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key
suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key
suricata
suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload
suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload
suricata
Executes dropped EXE 1 IoCs

Processes:

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

pid process

2440 841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

pid	process
2440	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exe

pid process

4720 icacls.exe

pid	process
4720	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\00dffbd3-ad2f-4d79-a625-9c6d0b6f3746\\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe\" --AutoStart"	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

Looks up external IP address via web service 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

8 api.2ip.ua
10 api.2ip.ua
36 api.2ip.ua
84 api.2ip.ua
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	ioc
8	api.2ip.ua
10	api.2ip.ua
36	api.2ip.ua
84	api.2ip.ua

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
4980	396	WerFault.exe	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
3764	2440	WerFault.exe	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

pid	process
396	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
396	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
816	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
816	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
2440	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
2440	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

description	pid	process	target process
PID 396 wrote to memory of 4720	396	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe	icacls.exe
PID 396 wrote to memory of 4720	396	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe	icacls.exe
PID 396 wrote to memory of 4720	396	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe	icacls.exe
PID 396 wrote to memory of 816	396	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
PID 396 wrote to memory of 816	396	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
PID 396 wrote to memory of 816	396	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe	841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe

C:\Users\Admin\AppData\Local\Temp\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
"C:\Users\Admin\AppData\Local\Temp\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:396

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\00dffbd3-ad2f-4d79-a625-9c6d0b6f3746" /deny *S-1-1-0:(OI)(CI)(DE,DC)
2⤵
- Modifies file permissions
PID:4720

C:\Users\Admin\AppData\Local\Temp\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
"C:\Users\Admin\AppData\Local\Temp\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe" --Admin IsNotAutoStart IsNotTask
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 396 -s 1576
2⤵
- Program crash
PID:4980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 396 -ip 396
1⤵
PID:2524

C:\Users\Admin\AppData\Local\00dffbd3-ad2f-4d79-a625-9c6d0b6f3746\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
C:\Users\Admin\AppData\Local\00dffbd3-ad2f-4d79-a625-9c6d0b6f3746\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe --Task
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 1100
2⤵
- Program crash
PID:3764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2440 -ip 2440
1⤵
PID:5088

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

1

T1222

Modify Registry

2

T1112

Install Root Certificate

1

T1130

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize
727B

MD5
93995ad095112907cfc088998c161574

SHA1
518c7127e11809bb74ff0f68ea7e86ea5aebc798

SHA256
fd16d238bcac3441688e7ca940c27bb02df8f0bf43b26d8e551414a18748c1cc

SHA512
c2a3153c65f0acbc821bf663b38591821402d9a00680e2e22f410bf1735752194c08b96f77b7e6712082584a8b6605f7ab9552ad2f6c193fbd13c90bb60436e9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize
471B

MD5
c04f441d0220712231531a90823834db

SHA1
68dd18f1e0c51f1fdc4621394091a2dad08e4a08

SHA256
055641d3987ae98e2dd627d3214ea8084ae773a3df9592191b86977c752a29e7

SHA512
3156cf79585a45d919d4b27da4fe860f06e3206961fe1d20347ad74ef17de81c47857f35acd5cda3fae5ade28ab9747529ea3e8e79ca80aaf98e1f0e852bed53

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize
402B

MD5
877fc4cf2908fbbb9f46e43fc8d2bd27

SHA1
ceecaf421462af1b10aad924a0ec7467b8397637

SHA256
114abebdd927514e63ea965f15a582a0e686e110026f9d87e490ffddb01374a1

SHA512
17c860aa0127c88921dab90d3ac9fe03902a637713c528477cd87bb00101d18d889fa8341eebb7ced4214f8a57d1ed2c12ba9aa23ae4dff932b921a658b99a92

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize
396B

MD5
3dbeecefd13489cf10f122f65e127058

SHA1
3ce58ed6fa0fa0d8949b713c7c08e02e78a25b59

SHA256
2479317669858455af1b2ac1369e8d80d194a3279cd2dd82b0489549f1f6242a

SHA512
1735a8d33017277913af1466bb79fcc01edf08f4c718087fdc55b2d3ea7029a3c006b7717f7cf95ac5724bed826ea4cdf812b3f5a065d4ac3e77eea4bc5b3815

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize
396B

MD5
060e73f46c2f4b0badbcd62d644e9f1e

SHA1
a9c9718829fe6509e5dc1d223b2f291d9fff2180

SHA256
76a88357bd748dd4f8e07a42368293ab5857a40399e6507f8b74744355a33fb8

SHA512
44d1bd76d005d8e42488721947debeb4d803acf5e9dccd7a29bce0225f379d2c3de8d0329fb5406ace0d7bcf5d89404b4447e47c9588b6155f5c94cf3871b14b

Download Submit
C:\Users\Admin\AppData\Local\00dffbd3-ad2f-4d79-a625-9c6d0b6f3746\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
Filesize
759KB

MD5
617b2beb7fd1f162b3a552a2906b5b1b

SHA1
c542b59788570f5334d4ea9b3c85661ee01f0fd3

SHA256
841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1

SHA512
c17cd4c6b05a38b69cffb655a7cb6c27a38f33ed95e43985beb89c7a7ff99a3903f146fd1e4f6398ce5dbf5cffd96a47606c8a6919b5b6f23c30e6c0b90532c0

Download Submit
C:\Users\Admin\AppData\Local\00dffbd3-ad2f-4d79-a625-9c6d0b6f3746\841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1.exe
Filesize
759KB

MD5
617b2beb7fd1f162b3a552a2906b5b1b

SHA1
c542b59788570f5334d4ea9b3c85661ee01f0fd3

SHA256
841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1

SHA512
c17cd4c6b05a38b69cffb655a7cb6c27a38f33ed95e43985beb89c7a7ff99a3903f146fd1e4f6398ce5dbf5cffd96a47606c8a6919b5b6f23c30e6c0b90532c0

Download Submit
memory/396-130-0x0000000000B84000-0x0000000000C15000-memory.dmp

Filesize
580KB

Download
memory/396-132-0x0000000000400000-0x0000000000A12000-memory.dmp

Filesize
6.1MB

Download
memory/396-131-0x0000000000C20000-0x0000000000D3A000-memory.dmp

Filesize
1.1MB

Download
memory/816-135-0x0000000000000000-mapping.dmp

Download
memory/816-140-0x0000000000B2E000-0x0000000000BBF000-memory.dmp

Filesize
580KB

Download
memory/816-141-0x0000000000400000-0x0000000000A12000-memory.dmp

Filesize
6.1MB

Download
memory/2440-143-0x0000000000C00000-0x0000000000C91000-memory.dmp

Filesize
580KB

Download
memory/2440-145-0x0000000000400000-0x0000000000A12000-memory.dmp

Filesize
6.1MB

Download
memory/4720-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads