djvu | 04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6

General

Target

04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
Size

876KB
MD5

41b0583e986bd5b29056fe47535545e3
SHA1

f7e44e9d530f70621a47e9f850da1bb5e2871960
SHA256

04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6
SHA512

beba9665b1635d2b07b726552fa23637a20cca144787833bfd77aa83cfa75f12fc4e2ea632efd08a6403eb6b646326d8f94fac282a81f05a929231e7f8ce4782
SSDEEP

12288:nPmDfAmqboRKh2b/fD3E735ylKz8MLzKs43aK55d6B4MXR+EQYV6nm/PfP6ultXm:nq7xRKhE/rEslmTLa55d6ShEq8PTc

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://tzgl.org/fhsgtsspen6/get.php

Attributes

extension
.yoqs
offline_id
Gy1ekaHyw11ZDr43dKFxYo9wA3NxFYOUEc6Pwvt1
payload_url
http://lencu.top/dl/build2.exe

http://tzgl.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-veBR09KNyi 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: 0380UIhfSd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/224-2-0x0000000002270000-0x000000000238B000-memory.dmp	family_djvu
behavioral2/memory/3100-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3100-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3100-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3100-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3100-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1924-53-0x0000000000400000-0x0000000000537000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4544	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9a28d82e-ef3f-4e59-bbd3-6416a2bb85e5\\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe\" --AutoStart"	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.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
8	api.2ip.ua
20	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 1068 set thread context of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.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	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3100	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
3100	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
1924	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
1924	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 224 wrote to memory of 3100	224	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	84
PID 3100 wrote to memory of 4544	3100	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	85
PID 3100 wrote to memory of 4544	3100	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	85
PID 3100 wrote to memory of 4544	3100	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	85
PID 3100 wrote to memory of 1068	3100	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	86
PID 3100 wrote to memory of 1068	3100	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	86
PID 3100 wrote to memory of 1068	3100	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	86
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88
PID 1068 wrote to memory of 1924	1068	04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe	88

C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
"C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:224
- C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
  "C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.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:3100
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9a28d82e-ef3f-4e59-bbd3-6416a2bb85e5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4544
- - C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
    "C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1068
  - - C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe
      "C:\Users\Admin\AppData\Local\Temp\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1924

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

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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
80ff9b85a434662417e5c226c80826aa

SHA1
64764095b6ba690a6dd8552b3eb4ae820a75b4dd

SHA256
87fcbcd861d48833b50f5f6a684298c5be2ca4b68260981a217354325b975036

SHA512
0e08ab42d06a240bab13a6c2bb5e2ffd1a43c2db8e59731483d0dda695a18c1ffd86a0da9add28622d8a373085b833939ada0e5cfe07af61a1cf8c3748475c67

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

Filesize
170B

MD5
2735861be0f6f4ddb2b95b9beb5f62b1

SHA1
ce56b472951bbc0825d7b24b5e066533d5f33a23

SHA256
cb0cf6133c6e4c53350cc6782fdc46805f2091446252239a92b81583d86078dc

SHA512
1c3a70ef3e4a8558b996d8e394fcfe33e5495ebe7cf845aaa31461ad9937a30feaefca5499b283c6985b24d36ecd85883a17f521ba37444c86e4e7892bd8ebc3

Download Submit
C:\Users\Admin\AppData\Local\9a28d82e-ef3f-4e59-bbd3-6416a2bb85e5\04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6.exe

Filesize
876KB

MD5
41b0583e986bd5b29056fe47535545e3

SHA1
f7e44e9d530f70621a47e9f850da1bb5e2871960

SHA256
04672ac92929c1b2589702f4c0dac7e18f0a2858542809a9c88014826a6df3f6

SHA512
beba9665b1635d2b07b726552fa23637a20cca144787833bfd77aa83cfa75f12fc4e2ea632efd08a6403eb6b646326d8f94fac282a81f05a929231e7f8ce4782

Download Submit
memory/224-2-0x0000000002270000-0x000000000238B000-memory.dmp

Filesize
1.1MB

Download
memory/224-1-0x00000000021A0000-0x0000000002236000-memory.dmp

Filesize
600KB

Download
memory/1068-25-0x0000000000400000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/1068-21-0x0000000000400000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/1924-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1924-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3100-5-0x0000000000400000-0x0000000000537000-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