djvu | f53c81ff96442cb24c5b07bd480f2ff86090e12cd47029769a8cd0db3120792c

General

Target

4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Size

771KB
MD5

2f32d69d9586d78506eacea4673e173d
SHA1

baabd756a8d201e6a0d37078b5d5e7bd04627c42
SHA256

4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d
SHA512

0f1252df5b9c3b76d75d791750b22b8d6e69e431a51c66425b041bdf95e8d60341f20836acf697e02c70d13407b7b17695a8e5a32245fc468212bd67f5230383
SSDEEP

12288:ARlhKek5YlQtaPdY1wJLYBhGb5Qgq94vGeufExq+XImyOepF:2GekWmqdYydYBc95CCJxq+Yse

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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 18 IoCs

resource	yara_rule
behavioral2/memory/1692-2-0x00000000021F0000-0x000000000230B000-memory.dmp	family_djvu
behavioral2/memory/4352-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2868-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1472	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\edf90725-0c45-46ff-ae4e-1b62920d5c58\\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe\" --AutoStart"	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.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
10	api.2ip.ua
11	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1692 set thread context of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 4580 set thread context of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88

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	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4352	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
4352	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
2868	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
2868	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 1692 wrote to memory of 4352	1692	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	83
PID 4352 wrote to memory of 1472	4352	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	84
PID 4352 wrote to memory of 1472	4352	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	84
PID 4352 wrote to memory of 1472	4352	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	84
PID 4352 wrote to memory of 4580	4352	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	85
PID 4352 wrote to memory of 4580	4352	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	85
PID 4352 wrote to memory of 4580	4352	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	85
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88
PID 4580 wrote to memory of 2868	4580	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	88

C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
"C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
  "C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4352
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\edf90725-0c45-46ff-ae4e-1b62920d5c58" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1472
- - C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
    "C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4580
  - - C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
      "C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2868

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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
d74560a10ea23a1d22400b817ebee46d

SHA1
d900064aee2d1aed1377085bf49df3bf8c49504f

SHA256
4cbe574a5c7cb6591b5e17391e56370163bcd5ca6051acb0d0bdac19b386d712

SHA512
c98e6051884b3a2e09dcf6086a293e08a079f0118dd501b39fa725c1097125a733cd1831a7f04400bf1fa08e6e3d4230e0eb2329919395efec5f1291c7ab6ccf

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

Filesize
170B

MD5
3c6b82ff921047f30131dbb6e58566a5

SHA1
b89ab244b1228f25fddb83051aae87751202d0d3

SHA256
85d20552af5a3e3a1f80e0f8e955349cfd3f21089a3a1d8456b9d3ab5eb16355

SHA512
6d5a3d0b8f9ff237c08d2f9f8018c4ee2a4fef40739ea2060df8f32acdc862390ffb0c5db688c18b02e1a51833f1ac6e770864bc073627be530831666e6f0ebc

Download Submit
C:\Users\Admin\AppData\Local\edf90725-0c45-46ff-ae4e-1b62920d5c58\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe

Filesize
771KB

MD5
2f32d69d9586d78506eacea4673e173d

SHA1
baabd756a8d201e6a0d37078b5d5e7bd04627c42

SHA256
4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d

SHA512
0f1252df5b9c3b76d75d791750b22b8d6e69e431a51c66425b041bdf95e8d60341f20836acf697e02c70d13407b7b17695a8e5a32245fc468212bd67f5230383

Download Submit
memory/1692-1-0x0000000000980000-0x0000000000A13000-memory.dmp

Filesize
588KB

Download
memory/1692-2-0x00000000021F0000-0x000000000230B000-memory.dmp

Filesize
1.1MB

Download
memory/2868-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2868-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4352-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4580-19-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/4580-23-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads