djvu | 0474887c2361109c3e0d8d0a8ee4967d96c5e48f3e159d68afe5dd83b3ef44a0

General

Target

8abe2ec905753769c490fb953db3ade1.exe
Size

857KB
MD5

8abe2ec905753769c490fb953db3ade1
SHA1

a65adb238e866641c05f0cea7ed6a9c2e5167c75
SHA256

0474887c2361109c3e0d8d0a8ee4967d96c5e48f3e159d68afe5dd83b3ef44a0
SHA512

36c5279a2047985ee61d187e98d7bdda580745b8dd0d6f3735eccde913ae69d543b3b960b6406a4244ea1b25ea8eaee0aeef58e3a7557f8473691ccd9b93ab86
SSDEEP

12288:WJXz/4fXakh2xmWIFeRBZrnTnNab+avSKhLqSEVz5hvqNA2Ww5ckzPNDd44GArqt:A/YXBQnZrTUbLSyqSsLvH25dmxArqs

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/nddddhsspen6/get.php

Attributes

extension
.aeur
offline_id
PLHYenhTzernvINe5FDZE1JEquSPr2tHDdFTTit1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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-rbzFCkr9sY 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: 0320gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/3628-2-0x0000000005020000-0x000000000513B000-memory.dmp	family_djvu
behavioral2/memory/3036-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3036-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3036-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3036-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3036-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5080-43-0x0000000000400000-0x0000000000537000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	8abe2ec905753769c490fb953db3ade1.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2204	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-1-5-21-768304381-2824894965-3840216961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\04097921-9440-4106-beff-15df0c603b89\\8abe2ec905753769c490fb953db3ade1.exe\" --AutoStart"	8abe2ec905753769c490fb953db3ade1.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
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3628 set thread context of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 972 set thread context of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89

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
3036	8abe2ec905753769c490fb953db3ade1.exe
3036	8abe2ec905753769c490fb953db3ade1.exe
5080	8abe2ec905753769c490fb953db3ade1.exe
5080	8abe2ec905753769c490fb953db3ade1.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3628 wrote to memory of 3036	3628	8abe2ec905753769c490fb953db3ade1.exe	85
PID 3036 wrote to memory of 2204	3036	8abe2ec905753769c490fb953db3ade1.exe	86
PID 3036 wrote to memory of 2204	3036	8abe2ec905753769c490fb953db3ade1.exe	86
PID 3036 wrote to memory of 2204	3036	8abe2ec905753769c490fb953db3ade1.exe	86
PID 3036 wrote to memory of 972	3036	8abe2ec905753769c490fb953db3ade1.exe	88
PID 3036 wrote to memory of 972	3036	8abe2ec905753769c490fb953db3ade1.exe	88
PID 3036 wrote to memory of 972	3036	8abe2ec905753769c490fb953db3ade1.exe	88
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89
PID 972 wrote to memory of 5080	972	8abe2ec905753769c490fb953db3ade1.exe	89

C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe
"C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3628
- C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe
  "C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\04097921-9440-4106-beff-15df0c603b89" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2204
- - C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe
    "C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:972
  - - C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe
      "C:\Users\Admin\AppData\Local\Temp\8abe2ec905753769c490fb953db3ade1.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:5080

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
230436fc402a027155e3213d5785c3ba

SHA1
47d5cb9b2669c0c048a3bccf207fff76ac170a67

SHA256
7bf515f114d9386f1071e63a484d2e65051cc6432343fcfb7232effddc795070

SHA512
4d1cb6d2b02b26936626a6f42724c50543626000a09644bef7670c4648fca7d9aa5a27ce585ccaf566a1bfc386fc311e438b1a8c747fd62311c6ed645c10c4f6

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
91bdfec021d178027acb5c718b70d327

SHA1
322854b8e6abde7158eee1a3c2795d0bbb6e4a4f

SHA256
1e2cb1f49649c07f0c3fd71a959669382696653f6b0c7df13e0f0294ce1e906b

SHA512
9b35e53b05e9c538dcb2e45b731a198849652be170521a1c568e21b64d745bb8ee8fafc28c191f01a5dbe61c2faf9e9d04fc259476c6fc305b7fa99625e46e63

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

Filesize
392B

MD5
c2767343936adc1981e01fa34f06a314

SHA1
2c483c9f5e8d7e93d0a0b0a462b788731256c774

SHA256
2f68f4e107995282c9deefabba1a23dc5a95eff2f03f37b546c1efa31f1bf65b

SHA512
9c6716473aa7ad0ead628f004682a672768dbc328537e03bd1b0730bdc77e442fa0a379a567ce53754b352db1f278be344bef67188ae2217a53187b60fdef3df

Download Submit
C:\Users\Admin\AppData\Local\04097921-9440-4106-beff-15df0c603b89\8abe2ec905753769c490fb953db3ade1.exe

Filesize
769KB

MD5
0a7883051f36e2ebaac5f954104b4d0c

SHA1
90c2624dc909de50f206775fc5cc0538c22ebc0a

SHA256
928f5614f7127c5beca3d9ccda4154a165e4dd23e90107f10d7a8c721e233090

SHA512
34c146d4436186fd501d51e979257be6293cd1ab9af7be17deb4f853e9f43209e13ae94d8a10de5b4b9af001ec662cf07d8c37de744821fc380e231ce9227433

Download Submit
memory/972-23-0x0000000004E90000-0x0000000004F32000-memory.dmp

Filesize
648KB

Download
memory/3036-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3036-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3036-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3036-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3036-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3628-1-0x0000000004F80000-0x0000000005020000-memory.dmp

Filesize
640KB

Download
memory/3628-2-0x0000000005020000-0x000000000513B000-memory.dmp

Filesize
1.1MB

Download
memory/5080-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5080-43-0x0000000000400000-0x0000000000537000-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