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 17 IoCs

resource	yara_rule
behavioral4/memory/792-2-0x0000000002490000-0x00000000025AB000-memory.dmp	family_djvu
behavioral4/memory/2288-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2288-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2288-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2288-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2288-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral4/memory/2576-42-0x0000000000400000-0x0000000000537000-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

pid	Process
868	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-1-5-21-661032028-162657920-1226909816-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9d3b1086-a7b1-4129-b48d-c1274a46c330\\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.

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 792 set thread context of 2288	792	66d5df681876c_file010924.exe	78
PID 2756 set thread context of 2576	2756	66d5df681876c_file010924.exe	83

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	66d5df681876c_file010924.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66d5df681876c_file010924.exe
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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2288	66d5df681876c_file010924.exe
2288	66d5df681876c_file010924.exe
2576	66d5df681876c_file010924.exe
2576	66d5df681876c_file010924.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 792 wrote to memory of 2288	792	66d5df681876c_file010924.exe	78
PID 2288 wrote to memory of 868	2288	66d5df681876c_file010924.exe	79
PID 2288 wrote to memory of 868	2288	66d5df681876c_file010924.exe	79
PID 2288 wrote to memory of 868	2288	66d5df681876c_file010924.exe	79
PID 2288 wrote to memory of 2756	2288	66d5df681876c_file010924.exe	80
PID 2288 wrote to memory of 2756	2288	66d5df681876c_file010924.exe	80
PID 2288 wrote to memory of 2756	2288	66d5df681876c_file010924.exe	80
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83
PID 2756 wrote to memory of 2576	2756	66d5df681876c_file010924.exe	83

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:792
- 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:2288
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9d3b1086-a7b1-4129-b48d-c1274a46c330" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:868
- - 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:2756
  - - 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:2576

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
e511a7ab8251601365f967a615642d55

SHA1
9f9922cd2b0986d4f9c7c55e263dc6e10ab3c06a

SHA256
8920ac93f19db32d73eaa747d9c127739505cf83590d680b6e71306810096421

SHA512
704f954420c0d81964ecb6292156acaf10ad8f1f85e23fa8db7141e1328a4971f94cd0790cdf84e06a0f6f3ba5711ee09afb0044aa07fa4624375bf3384e4d83

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

Filesize
170B

MD5
81ace7969cf2785baf7af370d8c39cbc

SHA1
b2546e3eaadf24d96f35be5f1926bcd2abca009f

SHA256
7f007d1183f3b5e56ae0831b7818614a5bd5958be5d3d4eecdb05d5857645128

SHA512
88247d8d659234c37ae14d53d6b7eac2a465ba669e8c937e4f02fd17881f9084767f66ec5ca72f1a754e02ade38f19b7dee3813d4a1933794965212d4dfe85bd

Download Submit
C:\Users\Admin\AppData\Local\9d3b1086-a7b1-4129-b48d-c1274a46c330\66d5df681876c_file010924.exe

Filesize
812KB

MD5
7972b08246e568495d9d116fc2d0b159

SHA1
3e12225494f08369858453fd9fc7481b4f788165

SHA256
2a6c90c8db27e6ac04c7e339dfe4b3c2d47a292bcf6fc1c5b4e0ae62fc81ff84

SHA512
f0ead246f31d1badb3cd5fd67cb5b3081f027fdad44dd50364734d61722f1bc2cacb1ad5d842ca3f7000a2699e7bdf059a508b54a95f5e155ae274d70e833ff7

Download Submit
memory/792-1-0x0000000002360000-0x0000000002401000-memory.dmp

Filesize
644KB

Download
memory/792-2-0x0000000002490000-0x00000000025AB000-memory.dmp

Filesize
1.1MB

Download
memory/2288-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2288-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2288-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2288-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2288-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2576-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2756-22-0x0000000000400000-0x000000000065D000-memory.dmp

Filesize
2.4MB

Download
memory/2756-23-0x0000000000400000-0x000000000065D000-memory.dmp

Filesize
2.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads