djvu | 1d0603bedae8c5e32396bc2742fb59ba28a7f54772c7dfd01b1ae6449c9fe7f8

Analysis

max time kernel
145s
max time network
133s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/12/2024, 23:04

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General

Target

3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
Size

783KB
MD5

4a2cc8fa0a14caf3fd88dd5229ef6d5c
SHA1

9158aa497f499db848b53dbab15c86b981a666b6
SHA256

3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a
SHA512

3327190894c4df451297c80ef85191e93e35216cd63f752e17f53ee927773138e02c56d67db27956390fffedac86388905baa33cfc8b039c12016a4d699f9e5f
SSDEEP

24576:WvcX7DvcwvDYp2rQlNQwKKRMD6xf2X6sZ:LEwvDYp+QliQMDU2XVZ

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.ghas
offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/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. You can get and look video overview decrypt tool: https://we.tl/t-0SLhZxAjRX Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0445JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2356-2-0x0000000000680000-0x000000000079B000-memory.dmp	family_djvu
behavioral1/memory/1916-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1916-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1916-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1916-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-70-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2172-71-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2724	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\611c76b0-b483-4ab0-a61b-b0b5244967d3\\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe\" --AutoStart"	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.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
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2356 set thread context of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2676 set thread context of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35

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	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
2172	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
2172	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 2356 wrote to memory of 1916	2356	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	30
PID 1916 wrote to memory of 2724	1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	33
PID 1916 wrote to memory of 2724	1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	33
PID 1916 wrote to memory of 2724	1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	33
PID 1916 wrote to memory of 2724	1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	33
PID 1916 wrote to memory of 2676	1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	34
PID 1916 wrote to memory of 2676	1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	34
PID 1916 wrote to memory of 2676	1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	34
PID 1916 wrote to memory of 2676	1916	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	34
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35
PID 2676 wrote to memory of 2172	2676	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	35

C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
"C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
  "C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1916
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\611c76b0-b483-4ab0-a61b-b0b5244967d3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2724
- - C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
    "C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
      "C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2172

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
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

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
a4510360ceb62befbc1c96552d337514

SHA1
4f4ca7bfbb89da385d066d429731991d9de987ca

SHA256
64c2f73d4f5cfe29e178d4ed1d2b9de57855bd8994ed4cde18ba9c7c62982944

SHA512
093c3c4ff3f560acaf7b6ff9787f7ef78b7805fb503b65feb06d71ec868932f0ce3d48cf425b159f9b6cc714eede33848614127537c578748abd8802bdbc88c1

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

Filesize
170B

MD5
46fe416d770c52ea132b4bcb95f42b47

SHA1
757edb182808b0a8d91ea16f8767f36415e32409

SHA256
277f553547f19fe78fac898910bd9d9068eeb626550c7bfd10025c606061956d

SHA512
e5b99ea48f0c9dbdf68c43e4b3be8e23c2a0f533e4c482b5256b327484aef0b7bfaef4b8c313bf0f9e353faf8451fa8e8b3d22b9c2a785e40f5e3d1f9e7808ed

Download Submit
C:\Users\Admin\AppData\Local\611c76b0-b483-4ab0-a61b-b0b5244967d3\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe

Filesize
783KB

MD5
4a2cc8fa0a14caf3fd88dd5229ef6d5c

SHA1
9158aa497f499db848b53dbab15c86b981a666b6

SHA256
3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a

SHA512
3327190894c4df451297c80ef85191e93e35216cd63f752e17f53ee927773138e02c56d67db27956390fffedac86388905baa33cfc8b039c12016a4d699f9e5f

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabD681.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1916-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1916-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1916-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1916-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1916-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-71-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2172-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2356-1-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2356-2-0x0000000000680000-0x000000000079B000-memory.dmp

Filesize
1.1MB

Download
memory/2356-7-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2356-0-0x00000000002C0000-0x0000000000351000-memory.dmp

Filesize
580KB

Download
memory/2676-35-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/2676-30-0x0000000000260000-0x00000000002F1000-memory.dmp

Filesize
580KB

Download
memory/2676-31-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download