djvu | d893df8e5dc6e3d73032cc80eb3681856fe24383e554c4d5f320e48a6ea28297

Analysis

max time kernel
142s
max time network
120s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
07-09-2024 04:16

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General

Target

4566789098.exe
Size

766KB
MD5

5f93554fe90505aab9fc871692d3b15c
SHA1

656434233bccaa04e0af4fa0de243357527a4661
SHA256

d893df8e5dc6e3d73032cc80eb3681856fe24383e554c4d5f320e48a6ea28297
SHA512

dc2b7a1ba258a234873ff7cadf58bd5ce6d1d45e34eff2f11996e4bfb70cc5e081d1accd7e048e5d90d36f5839f1451bd323eb354bdff2d2709708cf87fb819b
SSDEEP

12288:gA8yEmnvdkLR0MbCHy5N4ToSaqDR9jTo9v/IxINh6I7oPY8Yr7Zd:kmnvIOMzNoaq2AxIN0I7BnL

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.vook
offline_id
1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.com/files/1/build3.exe
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/3ed7a617738550b0a00c5aa231c0752020240316170955/d71ce1 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: 0857PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2520-2-0x00000000023F0000-0x000000000250B000-memory.dmp	family_djvu
behavioral1/memory/2168-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2168-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2168-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2168-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-60-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid	Process
3028	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4566789098.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\de2a0042-99b3-4c2c-953b-69692f437a7e\\4566789098.exe\" --AutoStart"	4566789098.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

4566789098.exe4566789098.exe

description	pid	Process	procid_target
PID 2520 set thread context of 2168	2520	4566789098.exe	30
PID 2824 set thread context of 2616	2824	4566789098.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

Processes:

4566789098.exe4566789098.exeicacls.exe4566789098.exe4566789098.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4566789098.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4566789098.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4566789098.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4566789098.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

4566789098.exe4566789098.exe

pid	Process
2168	4566789098.exe
2168	4566789098.exe
2616	4566789098.exe
2616	4566789098.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

4566789098.exe4566789098.exe4566789098.exe

description	pid	Process	procid_target
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2520 wrote to memory of 2168	2520	4566789098.exe	30
PID 2168 wrote to memory of 3028	2168	4566789098.exe	31
PID 2168 wrote to memory of 3028	2168	4566789098.exe	31
PID 2168 wrote to memory of 3028	2168	4566789098.exe	31
PID 2168 wrote to memory of 3028	2168	4566789098.exe	31
PID 2168 wrote to memory of 2824	2168	4566789098.exe	32
PID 2168 wrote to memory of 2824	2168	4566789098.exe	32
PID 2168 wrote to memory of 2824	2168	4566789098.exe	32
PID 2168 wrote to memory of 2824	2168	4566789098.exe	32
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33
PID 2824 wrote to memory of 2616	2824	4566789098.exe	33

C:\Users\Admin\AppData\Local\Temp\4566789098.exe
"C:\Users\Admin\AppData\Local\Temp\4566789098.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Users\Admin\AppData\Local\Temp\4566789098.exe
  "C:\Users\Admin\AppData\Local\Temp\4566789098.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\de2a0042-99b3-4c2c-953b-69692f437a7e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3028
- - C:\Users\Admin\AppData\Local\Temp\4566789098.exe
    "C:\Users\Admin\AppData\Local\Temp\4566789098.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2824
  - - C:\Users\Admin\AppData\Local\Temp\4566789098.exe
      "C:\Users\Admin\AppData\Local\Temp\4566789098.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2616

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
0d1962de4b37f240d8efaab58e47bd6a

SHA1
a519b08785c50d1f4d7ced66b00791b98f522a33

SHA256
2c98f1af90170f2033d0f1f5f7994fd19792765caa22dda8a5e71dc44c1f98d4

SHA512
4e671d14d785309a93174e2978e5fdbe9f1c7f3d6125f206d78d28a1fe94f6d2489e0070c9fb57d7fe8bbe4ea7b1c3f7c93fccd77f3fe8f3af3aa98aa17168af

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

Filesize
342B

MD5
da773f69719d090906caf5c45275a582

SHA1
07136d9e4d91461f8a8b31228152c45230fe2ee3

SHA256
4d8d8178ea58f18fbabc313c77daf49fd44412c17a01825ec310bb68de0e5ce2

SHA512
b96e5dca06375b9755d372b83ef1162f285e50ab0c8ae4de41ccfec3b7b6d69bacce79939d1ac871d4b9289e063d5e1ecdb65327a7986ff2b73d2700c23375cd

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

Filesize
170B

MD5
4a88f7200c2f1578dc87d4368a62b3b5

SHA1
a8e90ed7bef59f827932151f391f26e6d5bc9495

SHA256
388c626df5399caa0443bed7c5bb3eace1bc26fe112c2b015dc2207346a49c2a

SHA512
56bfa7eb1315261ef7e3d50152295468c583778cfb6ce965bad1b31ead5313e53191df704bd7d978fa9652210ebb0b72d6b9256737ae81553ad5a2ade0a09b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab8C29.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\de2a0042-99b3-4c2c-953b-69692f437a7e\4566789098.exe

Filesize
766KB

MD5
5f93554fe90505aab9fc871692d3b15c

SHA1
656434233bccaa04e0af4fa0de243357527a4661

SHA256
d893df8e5dc6e3d73032cc80eb3681856fe24383e554c4d5f320e48a6ea28297

SHA512
dc2b7a1ba258a234873ff7cadf58bd5ce6d1d45e34eff2f11996e4bfb70cc5e081d1accd7e048e5d90d36f5839f1451bd323eb354bdff2d2709708cf87fb819b

Download Submit
memory/2168-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2168-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2168-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2168-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2168-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2520-7-0x0000000000BE0000-0x0000000000C72000-memory.dmp

Filesize
584KB

Download
memory/2520-2-0x00000000023F0000-0x000000000250B000-memory.dmp

Filesize
1.1MB

Download
memory/2520-0-0x0000000000BE0000-0x0000000000C72000-memory.dmp

Filesize
584KB

Download
memory/2520-1-0x0000000000BE0000-0x0000000000C72000-memory.dmp

Filesize
584KB

Download
memory/2616-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2824-34-0x0000000000400000-0x0000000000B68000-memory.dmp

Filesize
7.4MB

Download
memory/2824-31-0x0000000000400000-0x0000000000B68000-memory.dmp

Filesize
7.4MB

Download
memory/2824-30-0x0000000000BE0000-0x0000000000C72000-memory.dmp

Filesize
584KB

Download