djvu | 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1

General

Target

3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
Size

729KB
MD5

d7528cd33b73718b5949277420681f90
SHA1

61d97f8da20ff2995890ce5f2c8a2c9e6e51c078
SHA256

3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1
SHA512

b3dab709e19a2a8bad92b259ea1739ad55564f6fe31e9f4e502b6280ae6c70cdf5a0f1fda208887da4bbcf9213986e2038abe6a09dc2940998df08d82e87d474
SSDEEP

12288:koywWrwlTyC9yR+xBP4wMpAuhjH8/Hl19KKjNgzqE0CM6EpJMwk:PlTX9Xj4w+hbM1/g2kM

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.watz
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
payload_url
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, 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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/abe121434ad837dd5bdd03878a14485820240531135509/34284d Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0874PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/2076-2-0x0000000002350000-0x000000000246B000-memory.dmp	family_djvu
behavioral2/memory/1336-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1336-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1168-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
748	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9c6749a5-8023-4390-abcf-f0ef006a463d\\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe\" --AutoStart"	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
23	api.2ip.ua
24	api.2ip.ua
29	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2076 set thread context of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2832 set thread context of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1336	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
1336	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
1168	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
1168	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 2076 wrote to memory of 1336	2076	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	89
PID 1336 wrote to memory of 748	1336	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	92
PID 1336 wrote to memory of 748	1336	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	92
PID 1336 wrote to memory of 748	1336	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	92
PID 1336 wrote to memory of 2832	1336	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	93
PID 1336 wrote to memory of 2832	1336	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	93
PID 1336 wrote to memory of 2832	1336	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	93
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95
PID 2832 wrote to memory of 1168	2832	3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe	95

C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
"C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
  "C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1336
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9c6749a5-8023-4390-abcf-f0ef006a463d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:748
- - C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
    "C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2832
  - - C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe
      "C:\Users\Admin\AppData\Local\Temp\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1168

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
2411d758c4451bd5dfb059fe39595f08

SHA1
0586e3242810525a7f427d2d841eaad047b9c9dc

SHA256
3f1c6d36e8be4c09d6cb22cf83c739860e1bdf95cd9421cc3e64b0516277c52e

SHA512
663f5e4d652ebd92ba099ca5d95e93ec1af7873d9b7ff9d54565fc2968c6508cf42427d06473e8e3aa4b84043b258bd76d40c014d6eae2ebb66618891f073b22

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
49f9a1fb8393055627d6f72c345b2c40

SHA1
b11518c8970fd79035fd9e4ce4b367e7410a18e4

SHA256
375d6e8ccf8c1f52f7b7c4a87ce7ee370a5ae8929880379c01bc77cf2de587e8

SHA512
e0cd7f3c2051ff75755ab3e07ce3c2889019cba0c219b30f0d3bd8b5410f804efcbc9fdf5e0f0768838348c13c9cb55dabfeaff39728fbb4aab586293346c6d5

Download Submit
C:\Users\Admin\AppData\Local\9c6749a5-8023-4390-abcf-f0ef006a463d\3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1.exe

Filesize
729KB

MD5
d7528cd33b73718b5949277420681f90

SHA1
61d97f8da20ff2995890ce5f2c8a2c9e6e51c078

SHA256
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1

SHA512
b3dab709e19a2a8bad92b259ea1739ad55564f6fe31e9f4e502b6280ae6c70cdf5a0f1fda208887da4bbcf9213986e2038abe6a09dc2940998df08d82e87d474

Download Submit
memory/1168-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1168-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1336-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-2-0x0000000002350000-0x000000000246B000-memory.dmp

Filesize
1.1MB

Download
memory/2076-1-0x0000000002210000-0x00000000022A4000-memory.dmp

Filesize
592KB

Download
memory/2832-25-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2832-21-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads