djvu | 2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31

General

Target

2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe
Size

757KB
MD5

5093f66a39d5e25aa3eec6a1181a03b8
SHA1

b5eff256d3f1639515ea8e6bbd568eedba571690
SHA256

2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31
SHA512

9816a0508b39e3139f010fbdff042ca28693f919c39545106886972a31a82068affb0602bd52797412575fed5320047d98632eeaab519c23c1f8d17ac14345a5
SSDEEP

12288:c9vu0WQF0BKwIMKdTxaQBubeBI+y/Fvdxhx89HRy6YUKo3Ry0Ev1s3yROe949f1y:6zF6lIMe9Buq6x53ERstdXvsyYe949fw

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/3716-2-0x0000000003800000-0x000000000391B000-memory.dmp	family_djvu
behavioral1/memory/1300-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1300-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1300-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1300-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1300-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4972-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4628	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-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f6624ffd-7c6d-4e97-b623-773764f460b8\\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe\" --AutoStart"	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.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
22	api.2ip.ua
9	api.2ip.ua
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3716 set thread context of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3852 set thread context of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1300	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe
1300	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe
4972	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe
4972	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 3716 wrote to memory of 1300	3716	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	86
PID 1300 wrote to memory of 4628	1300	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	90
PID 1300 wrote to memory of 4628	1300	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	90
PID 1300 wrote to memory of 4628	1300	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	90
PID 1300 wrote to memory of 3852	1300	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	91
PID 1300 wrote to memory of 3852	1300	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	91
PID 1300 wrote to memory of 3852	1300	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	91
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93
PID 3852 wrote to memory of 4972	3852	2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe	93

C:\Users\Admin\AppData\Local\Temp\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe
"C:\Users\Admin\AppData\Local\Temp\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3716
- C:\Users\Admin\AppData\Local\Temp\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe
  "C:\Users\Admin\AppData\Local\Temp\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1300
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f6624ffd-7c6d-4e97-b623-773764f460b8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4628
- - C:\Users\Admin\AppData\Local\Temp\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe
    "C:\Users\Admin\AppData\Local\Temp\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3852
  - - C:\Users\Admin\AppData\Local\Temp\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe
      "C:\Users\Admin\AppData\Local\Temp\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4972

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
9bf3a1941056959a5eba7360314bdcbc

SHA1
99344d4525cc7a159ab9cfd079b6dd0345df6851

SHA256
a5553e0213c248272671a9e9bd11ccff7656d1eb324f57ca50d1c2d97d166fa7

SHA512
6e210003c3b60dc929c7d825d4bae7eff3d4ace398cb8eea6e26fcfe11fa57c2d5c9fd224bff751e91a12860f96a0fc450ec07a820b8eb01b46ec855cf71a08c

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
db3ae9fd42dd734862634e2f6d7129eb

SHA1
c209d68b1b74d2bc537fcc1e5e06c24b5dfaef18

SHA256
01ae9737b582b0896567817a23749142f70daec904e3aff6edf267992163485c

SHA512
49b563c3eeebfb58c509c1c82a5ab204fd5076850b18072dbe8dd40214ab9d02558f83f26dc90ea914425909e35cd459b0fa005debc9157685d6d8d99105dbf9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
249093d8c7740f3ca3ffa463279055b2

SHA1
a5e953e1e43a5cce12827da6031451ca5ea7c5f3

SHA256
8d10cd6419ba42e0d6af43949a4c489594e01eda3c5023809b71ca1f4d311a28

SHA512
85d10d55d934dd26b007051f74f48b7e5fd311548654a01d71549ae8aa8c2178abac028ef855beef9151b3bd4889a601f7cf0d3a63a3e7e00a5e652efb694140

Download Submit
C:\Users\Admin\AppData\Local\f6624ffd-7c6d-4e97-b623-773764f460b8\2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31.exe

Filesize
757KB

MD5
5093f66a39d5e25aa3eec6a1181a03b8

SHA1
b5eff256d3f1639515ea8e6bbd568eedba571690

SHA256
2545f1ee454e96b5c1d06c7a675488615ff98cd1baca629963172b466e57fd31

SHA512
9816a0508b39e3139f010fbdff042ca28693f919c39545106886972a31a82068affb0602bd52797412575fed5320047d98632eeaab519c23c1f8d17ac14345a5

Download Submit
memory/1300-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1300-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1300-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1300-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1300-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3716-1-0x0000000003700000-0x000000000379F000-memory.dmp

Filesize
636KB

Download
memory/3716-2-0x0000000003800000-0x000000000391B000-memory.dmp

Filesize
1.1MB

Download
memory/3852-18-0x00000000036E0000-0x0000000003773000-memory.dmp

Filesize
588KB

Download
memory/4972-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4972-37-0x0000000000400000-0x0000000000537000-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