djvu | 2a6c90c8db27e6ac04c7e339dfe4b3c2d47a292bcf6fc1c5b4e0ae62fc81ff84

General

Target

66d5df681876c_file010924.exe
Size

812KB
MD5

7972b08246e568495d9d116fc2d0b159
SHA1

3e12225494f08369858453fd9fc7481b4f788165
SHA256

2a6c90c8db27e6ac04c7e339dfe4b3c2d47a292bcf6fc1c5b4e0ae62fc81ff84
SHA512

f0ead246f31d1badb3cd5fd67cb5b3081f027fdad44dd50364734d61722f1bc2cacb1ad5d842ca3f7000a2699e7bdf059a508b54a95f5e155ae274d70e833ff7
SSDEEP

24576:60oeRhL4Zihw/WaRupypku1ADMH0h0kT:60J482RuRuQMm

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 16 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3852-2-0x0000000002430000-0x000000000254B000-memory.dmp	family_djvu
behavioral1/memory/4508-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4508-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4508-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4508-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4508-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2932-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2976 icacls.exe

pid	process
2976	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

66d5df681876c_file010924.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1453213197-474736321-1741884505-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e3ddc1fc-c1f0-471a-916e-95800f3186e8\\66d5df681876c_file010924.exe\" --AutoStart"	66d5df681876c_file010924.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.

Processes:

flow ioc

10 api.2ip.ua
1 api.2ip.ua
2 api.2ip.ua

flow	ioc
10	api.2ip.ua
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

66d5df681876c_file010924.exe66d5df681876c_file010924.exe

description	pid	process	target process
PID 3852 set thread context of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 set thread context of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe

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

Processes:

icacls.exe66d5df681876c_file010924.exe66d5df681876c_file010924.exe66d5df681876c_file010924.exe66d5df681876c_file010924.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66d5df681876c_file010924.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66d5df681876c_file010924.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66d5df681876c_file010924.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66d5df681876c_file010924.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

66d5df681876c_file010924.exe66d5df681876c_file010924.exe

pid process

4508 66d5df681876c_file010924.exe
4508 66d5df681876c_file010924.exe
2932 66d5df681876c_file010924.exe
2932 66d5df681876c_file010924.exe

pid	process
4508	66d5df681876c_file010924.exe
4508	66d5df681876c_file010924.exe
2932	66d5df681876c_file010924.exe
2932	66d5df681876c_file010924.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

66d5df681876c_file010924.exe66d5df681876c_file010924.exe66d5df681876c_file010924.exe

description	pid	process	target process
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3852 wrote to memory of 4508	3852	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 4508 wrote to memory of 2976	4508	66d5df681876c_file010924.exe	icacls.exe
PID 4508 wrote to memory of 2976	4508	66d5df681876c_file010924.exe	icacls.exe
PID 4508 wrote to memory of 2976	4508	66d5df681876c_file010924.exe	icacls.exe
PID 4508 wrote to memory of 3264	4508	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 4508 wrote to memory of 3264	4508	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 4508 wrote to memory of 3264	4508	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe
PID 3264 wrote to memory of 2932	3264	66d5df681876c_file010924.exe	66d5df681876c_file010924.exe

C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
  "C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4508
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e3ddc1fc-c1f0-471a-916e-95800f3186e8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2976
- - C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
    "C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3264
  - - C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
      "C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2932

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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
10eef9a94054f22b1ad013052c99ecb1

SHA1
47544aa2d43170071ede2d3ba1a940b02af175e0

SHA256
d97f52aac9d60c76298e4a0d4268818e78fc5283c14fdf68d0fc0eaca9809e1f

SHA512
7b7e7403f8085cbdb72b84caa0a8be587e5d564da2846fb883ea33fb582770451743748330331c3f042951bc247b96b8c911f8682093f60f685924e39561bead

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

Filesize
170B

MD5
d191af5a63810bb9a479241063fabfca

SHA1
9ec8d3843c222339ab6a102fa385aefbd5811ab0

SHA256
4671ad1c9ab4b55c3807315da85ac52034a0251292b3c1347321dc7ea4ee1aac

SHA512
28aabfe85b1ad4d0ccc827e69a5d355dd311d8a6810947da4cd9ee366f2ca3ea43b78e9385043e47a2ff50050ca71e1513e01cdab559f6b9fa4e646f85176f37

Download Submit
C:\Users\Admin\AppData\Local\e3ddc1fc-c1f0-471a-916e-95800f3186e8\66d5df681876c_file010924.exe

Filesize
812KB

MD5
7972b08246e568495d9d116fc2d0b159

SHA1
3e12225494f08369858453fd9fc7481b4f788165

SHA256
2a6c90c8db27e6ac04c7e339dfe4b3c2d47a292bcf6fc1c5b4e0ae62fc81ff84

SHA512
f0ead246f31d1badb3cd5fd67cb5b3081f027fdad44dd50364734d61722f1bc2cacb1ad5d842ca3f7000a2699e7bdf059a508b54a95f5e155ae274d70e833ff7

Download Submit
memory/2932-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2932-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3264-25-0x0000000000400000-0x000000000065D000-memory.dmp

Filesize
2.4MB

Download
memory/3264-21-0x0000000000400000-0x000000000065D000-memory.dmp

Filesize
2.4MB

Download
memory/3852-2-0x0000000002430000-0x000000000254B000-memory.dmp

Filesize
1.1MB

Download
memory/3852-1-0x00000000022C0000-0x0000000002358000-memory.dmp

Filesize
608KB

Download
memory/4508-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4508-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4508-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4508-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4508-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads