djvu | f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf

General

Target

NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe
Size

782KB
MD5

1fbc151e5333811a0a45e4821ead3c15
SHA1

501f23e601f77160ceb4686d28879548460b7fc3
SHA256

f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf
SHA512

0c56829e83711b6570c1c9b43d2c2e083813f1a152051debaabd48fffddb6120c2c5a21676bb9d3a861cf94fa08c56d8286a04e9fbf66c1d384bbcb2500da1fd
SSDEEP

12288:ydk4bl0Qre+S0Meaxx/vklvQKLiDHObnoC6fYR5whtXx:ydpJDSDZ49QrHOboC6fgwhtXx

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.ttwq
offline_id
9qw1wmu1ty4GEiHZdxilHPjCyX6ENKTotjt6MIt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-4vhLUot4Kz 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: 0798JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

resource	yara_rule
behavioral2/memory/3284-2-0x0000000004040000-0x000000000415B000-memory.dmp	family_djvu
behavioral2/memory/3412-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3412-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3412-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3412-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3412-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3412-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4540-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4540-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4540-26-0x0000000000400000-0x0000000000537000-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-1-5-21-3027552071-446050021-1254071215-1000\Control Panel\International\Geo\Nation	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1980	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-1-5-21-3027552071-446050021-1254071215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0c6bdd6e-bfaa-4f09-aa66-97e124cc8458\\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe\" --AutoStart"	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
14	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3284 set thread context of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 2948 set thread context of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1684	4540	WerFault.exe	102

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3412	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe
3412	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3284 wrote to memory of 3412	3284	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	87
PID 3412 wrote to memory of 1980	3412	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	98
PID 3412 wrote to memory of 1980	3412	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	98
PID 3412 wrote to memory of 1980	3412	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	98
PID 3412 wrote to memory of 2948	3412	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	100
PID 3412 wrote to memory of 2948	3412	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	100
PID 3412 wrote to memory of 2948	3412	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	100
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102
PID 2948 wrote to memory of 4540	2948	NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe	102

C:\Users\Admin\AppData\Local\Temp\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Users\Admin\AppData\Local\Temp\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe
  "C:\Users\Admin\AppData\Local\Temp\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3412
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0c6bdd6e-bfaa-4f09-aa66-97e124cc8458" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1980
- - C:\Users\Admin\AppData\Local\Temp\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2948
  - - C:\Users\Admin\AppData\Local\Temp\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe
      "C:\Users\Admin\AppData\Local\Temp\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4540
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4540 -s 568
        5⤵
        Program crash
        
        PID:1684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4540 -ip 4540
1⤵
PID:1460

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

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

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\Local\0c6bdd6e-bfaa-4f09-aa66-97e124cc8458\NEAS.f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf_JC.exe

Filesize
782KB

MD5
1fbc151e5333811a0a45e4821ead3c15

SHA1
501f23e601f77160ceb4686d28879548460b7fc3

SHA256
f22d9db6001e5233cefe41a3f4509040bd21814543adcaf1c9742c1da49ed3bf

SHA512
0c56829e83711b6570c1c9b43d2c2e083813f1a152051debaabd48fffddb6120c2c5a21676bb9d3a861cf94fa08c56d8286a04e9fbf66c1d384bbcb2500da1fd

Download Submit
memory/2948-21-0x0000000003FD0000-0x0000000004071000-memory.dmp

Filesize
644KB

Download
memory/3284-2-0x0000000004040000-0x000000000415B000-memory.dmp

Filesize
1.1MB

Download
memory/3284-1-0x0000000003FA0000-0x0000000004036000-memory.dmp

Filesize
600KB

Download
memory/3412-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3412-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3412-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3412-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3412-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3412-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4540-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4540-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4540-26-0x0000000000400000-0x0000000000537000-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