djvu | 1d0603bedae8c5e32396bc2742fb59ba28a7f54772c7dfd01b1ae6449c9fe7f8

General

Target

3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
Size

783KB
MD5

4a2cc8fa0a14caf3fd88dd5229ef6d5c
SHA1

9158aa497f499db848b53dbab15c86b981a666b6
SHA256

3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a
SHA512

3327190894c4df451297c80ef85191e93e35216cd63f752e17f53ee927773138e02c56d67db27956390fffedac86388905baa33cfc8b039c12016a4d699f9e5f
SSDEEP

24576:WvcX7DvcwvDYp2rQlNQwKKRMD6xf2X6sZ:LEwvDYp+QliQMDU2XVZ

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/2296-2-0x0000000000B20000-0x0000000000C3B000-memory.dmp	family_djvu
behavioral2/memory/3948-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3948-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3948-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3948-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3948-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-53-0x0000000000400000-0x0000000000537000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
832	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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a6050c2a-04e1-4db0-a185-ad566c5b1060\\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe\" --AutoStart"	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.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
7	api.2ip.ua
8	api.2ip.ua
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2296 set thread context of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 1580 set thread context of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87

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	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3948	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
3948	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
3980	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
3980	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 2296 wrote to memory of 3948	2296	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	83
PID 3948 wrote to memory of 832	3948	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	84
PID 3948 wrote to memory of 832	3948	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	84
PID 3948 wrote to memory of 832	3948	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	84
PID 3948 wrote to memory of 1580	3948	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	85
PID 3948 wrote to memory of 1580	3948	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	85
PID 3948 wrote to memory of 1580	3948	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	85
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87
PID 1580 wrote to memory of 3980	1580	3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe	87

C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
"C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
  "C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.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:3948
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a6050c2a-04e1-4db0-a185-ad566c5b1060" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:832
- - C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
    "C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1580
  - - C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe
      "C:\Users\Admin\AppData\Local\Temp\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3980

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
261c8559669fbcdd433937aa52081058

SHA1
b9d1d956ff67f15432ca41b034aee7bdd435858f

SHA256
34f8aebed0deeaf3fc21c1600270eea451fabb0c78dbe16db405ea96868bcc79

SHA512
88abe23c0729ab50fa6c2aa78638f9285ba48a8d4fcc1702aa8da8d9b61f6c967bc5b630e9175e4495a57dcf69131f797f7c574fae9777927b2f33c7a1992448

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

Filesize
170B

MD5
6395b8fdc7c0acd9425830dba728fb35

SHA1
c58626e7cf216c11e09fdf12b2101e35b4facb72

SHA256
784c53881209434d2377e2e5428bceb018216ffa4ffbbacc768e38d69af7d879

SHA512
f8fe28ef961f5b5a60d4d55283b3567be0f916990c57058c35fcc09d73cd14963117fbcdaa4249213af65a1250120f304717b4549de7f1624967f8ac5f097da6

Download Submit
C:\Users\Admin\AppData\Local\a6050c2a-04e1-4db0-a185-ad566c5b1060\3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a.exe

Filesize
783KB

MD5
4a2cc8fa0a14caf3fd88dd5229ef6d5c

SHA1
9158aa497f499db848b53dbab15c86b981a666b6

SHA256
3393b5185daebc1025eafb230c74cfef1a1329fcc61a6551bcc90f2fedf6275a

SHA512
3327190894c4df451297c80ef85191e93e35216cd63f752e17f53ee927773138e02c56d67db27956390fffedac86388905baa33cfc8b039c12016a4d699f9e5f

Download Submit
memory/1580-26-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/1580-21-0x0000000000400000-0x00000000004EC000-memory.dmp

Filesize
944KB

Download
memory/2296-2-0x0000000000B20000-0x0000000000C3B000-memory.dmp

Filesize
1.1MB

Download
memory/2296-1-0x0000000000690000-0x0000000000726000-memory.dmp

Filesize
600KB

Download
memory/3948-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-53-0x0000000000400000-0x0000000000537000-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