djvu | 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1

Analysis

max time kernel
142s
max time network
125s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
09-08-2024 09:10

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General

Target

file.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

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 14 IoCs

resource	yara_rule
behavioral1/memory/2852-2-0x0000000001DB0000-0x0000000001ECB000-memory.dmp	family_djvu
behavioral1/memory/2832-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2832-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2832-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2832-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2632-60-0x0000000000400000-0x0000000000537000-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
2592	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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b5e8448e-e624-44cf-b925-5579c5544271\\file.exe\" --AutoStart"	file.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 2832	2852	file.exe	30
PID 2204 set thread context of 2632	2204	file.exe	33

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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2832	file.exe
2832	file.exe
2632	file.exe
2632	file.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2852 wrote to memory of 2832	2852	file.exe	30
PID 2832 wrote to memory of 2592	2832	file.exe	31
PID 2832 wrote to memory of 2592	2832	file.exe	31
PID 2832 wrote to memory of 2592	2832	file.exe	31
PID 2832 wrote to memory of 2592	2832	file.exe	31
PID 2832 wrote to memory of 2204	2832	file.exe	32
PID 2832 wrote to memory of 2204	2832	file.exe	32
PID 2832 wrote to memory of 2204	2832	file.exe	32
PID 2832 wrote to memory of 2204	2832	file.exe	32
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33
PID 2204 wrote to memory of 2632	2204	file.exe	33

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2832
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\b5e8448e-e624-44cf-b925-5579c5544271" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2592
- - C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2204
  - - C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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
8c05558018ba0b4b915aa212beab8b27

SHA1
4974fc8cb98edc20337118e9901e94a08a2329c4

SHA256
87e41a3ebb97930827f3419e19731d8eb3471c533ef02e1092ec080eb90dc53f

SHA512
1a0b8d70939bedeae76531da78f74e603fd7f90adf649e878619137a58e179821e1b2a237f2e06135136b93dd545796b91771f1f244f13ba290a838c515b8cd3

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
304B

MD5
d7c83225a5725869dacbb81491a55b3d

SHA1
d0cacd13a29d5f83f4756083d6b16897b8831b43

SHA256
1a135d19ad46051c0de2d495d11ddeb2e1bda304b4a6cc5dd203dcfb5184ffdf

SHA512
5959a1ed7522cb47917d44fe482b1cb329293e1922aaaa25191148d24978e5d29d5e20bc4d6b1ef001ccaee42ebadc476642f16a8aa13c04841b7e4aef1bcfdc

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

Filesize
170B

MD5
c040a9a786656861d75dd00d58751cc2

SHA1
3528b8d0c7e45e704bc2c73fe77dfddffa8171d3

SHA256
b2a79efbf6e203d4a8c8a3f6f6fe0d8c8492a7616fee6be3f6153b698725b526

SHA512
fbb55ce7c5be966129d2598a60682570882eff29a12d678243228fc5ca3f9ddb0a63cbf6e38c7f35c4d9b0316d61afa4f500a984981fdfea517a4272192a7a9e

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab708E.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\b5e8448e-e624-44cf-b925-5579c5544271\file.exe

Filesize
729KB

MD5
d7528cd33b73718b5949277420681f90

SHA1
61d97f8da20ff2995890ce5f2c8a2c9e6e51c078

SHA256
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1

SHA512
b3dab709e19a2a8bad92b259ea1739ad55564f6fe31e9f4e502b6280ae6c70cdf5a0f1fda208887da4bbcf9213986e2038abe6a09dc2940998df08d82e87d474

Download Submit
memory/2204-30-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2204-36-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2204-29-0x0000000000360000-0x00000000003F2000-memory.dmp

Filesize
584KB

Download
memory/2632-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2632-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2632-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2632-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2632-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2632-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2632-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2632-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2632-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2832-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2832-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2852-2-0x0000000001DB0000-0x0000000001ECB000-memory.dmp

Filesize
1.1MB

Download
memory/2852-1-0x0000000000540000-0x00000000005D2000-memory.dmp

Filesize
584KB

Download
memory/2852-0-0x0000000000540000-0x00000000005D2000-memory.dmp

Filesize
584KB

Download