djvu | 279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c

Analysis

max time kernel
146s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
21/07/2024, 22:24

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
Size 791KB
Sample240721-2brphaxfqd
SHA256 279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c
MD5 5e051e1484c6d5870684ace6cd03b6bb
SHA1 aa4530b63386a2d87634aa6e97e4751404caf6a6
SHA512 fca2b068fe2b3115aede9b5cfe71e85161b0c132017d67e5cda5c3f8a9640fe7aa7298e68cf5bb5faa42eb9da8e40fac9cb1ee8d645c0a8739554ee2589b87d3
SSDEEP 12288:P8aSLiij6i5pDZ+OgSsyyf9fdnwlOuDcpcEqJ/v4bBw0fmOAfgZzmI:kJiyp5pDIosyw+NcpcEqpw+ONZzt
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/lancer/get.php

Attributes

extension
.qual
offline_id
KLbRmn6on3AXGFgDLGtd0IkHmV7uHw9VxlcxO5t1
payload_url
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. 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: 0876qual

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/972-2-0x0000000004340000-0x000000000445B000-memory.dmp	family_djvu
behavioral2/memory/1692-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1692-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1692-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1692-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1692-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4896-47-0x0000000000400000-0x0000000000537000-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-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
628	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-1-5-21-2636447293-1148739154-93880854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e83648d1-465e-42ca-94fe-a576f7d65729\\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe\" --AutoStart"	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe

Looks up external IP address via web service 5 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
15	api.2ip.ua
27	api.2ip.ua
60	api.2ip.ua
81	api.2ip.ua
82	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 972 set thread context of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 540 set thread context of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109

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
1692	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
1692	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
4896	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
4896	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 972 wrote to memory of 1692	972	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	91
PID 1692 wrote to memory of 628	1692	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	105
PID 1692 wrote to memory of 628	1692	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	105
PID 1692 wrote to memory of 628	1692	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	105
PID 1692 wrote to memory of 540	1692	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	106
PID 1692 wrote to memory of 540	1692	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	106
PID 1692 wrote to memory of 540	1692	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	106
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109
PID 540 wrote to memory of 4896	540	279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe	109

C:\Users\Admin\AppData\Local\Temp\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
"C:\Users\Admin\AppData\Local\Temp\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:972
- C:\Users\Admin\AppData\Local\Temp\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
  "C:\Users\Admin\AppData\Local\Temp\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e83648d1-465e-42ca-94fe-a576f7d65729" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:628
- - C:\Users\Admin\AppData\Local\Temp\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
    "C:\Users\Admin\AppData\Local\Temp\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:540
  - - C:\Users\Admin\AppData\Local\Temp\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
      "C:\Users\Admin\AppData\Local\Temp\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4896

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 1KB
SHA256 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
MD5 7fb5fa1534dcf77f2125b2403b30a0ee
SHA1 365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA512 a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Size 436B
SHA256 5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f
MD5 1bfe0a81db078ea084ff82fe545176fe
SHA1 50b116f578bd272922fa8eae94f7b02fd3b88384
SHA512 37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d
MD5 SHA1 SHA512

Submit Download

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 174B
SHA256 abed54811732f0cdf2a0e10393646c98c7d00cce410a950eca2b96b9880bcede
MD5 61963a386f83da162dfec2eb5143af90
SHA1 f33a8f36039f74d34af8e7b8b2d65801bae4da68
SHA512 cb2dbe5541f9259e2df4f36c107b9f60cdf2ae0722023bcfcee65b33c0ef1a735c1f95c0bdb89792ccac23bf5d01af4c01508ea31e9a3a59224bad2427e41c66
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 4440870d4d88b1cfb88c387befa0a134c7c0bc9a731c4c469e22fae3386bfe82
MD5 8fdbf9e655e6c8724c0d374ac0ff3397
SHA1 1e0c9052f44eb259546b1d159019590f86620f4c
SHA512 d7212baad205a7afd3e9551a3525cce2e72042847916e979e2c34926ce9af4bf6f5a5112badbaad3277fe05b7e1df944a2f7f7670144f896d1bff98bb78f19f0
MD5 SHA1 SHA512

Submit Download

279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe

Path C:\Users\Admin\AppData\Local\e83648d1-465e-42ca-94fe-a576f7d65729\279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c.exe
Size 791KB
SHA256 279178436533262279c2e83d8e4af6ca0349dc49308659dc5a7c925c27dad34c
MD5 5e051e1484c6d5870684ace6cd03b6bb
SHA1 aa4530b63386a2d87634aa6e97e4751404caf6a6
SHA512 fca2b068fe2b3115aede9b5cfe71e85161b0c132017d67e5cda5c3f8a9640fe7aa7298e68cf5bb5faa42eb9da8e40fac9cb1ee8d645c0a8739554ee2589b87d3
SSDEEP 12288:P8aSLiij6i5pDZ+OgSsyyf9fdnwlOuDcpcEqJ/v4bBw0fmOAfgZzmI:kJiyp5pDIosyw+NcpcEqpw+ONZzt
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/972-2-0x0000000004340000-0x000000000445B000-memory.dmp

Download

memory/972-1-0x0000000004250000-0x00000000042E4000-memory.dmp

Download

memory/1692-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1692-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1692-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1692-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1692-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-25-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-38-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-42-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-45-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-44-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-46-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4896-47-0x0000000000400000-0x0000000000537000-memory.dmp

Download