djvu | c7f3e326771b6b34a137dbc1a40ba507a315145c3f9a98207aa924e963afcbf3

General

Target

e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
Size

762KB
MD5

441b51a9b3e7dc464918b58b2cf4a28d
SHA1

6e3181efe967ef4ec6e5f5657cc8c6f54c785de6
SHA256

e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d
SHA512

6f134d3765ea847deeb61522545032041cf7a288126b63012068e0b05e69875bc6b6fcc9b10c24872c56f53bb0056430ddc0b4ca25ac4c1c2b6a5972570f442d
SSDEEP

12288:9zx3jLiXztlrsxjxXntd4/ge8vlzEZ5eXvNmCh18okuikML+C2fC0EbrjJ/ST/cQ:5xixV6HagflVN/dkVkM0fC0EXjJ/ST/r

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/1912-2-0x00000000022D0000-0x00000000023EB000-memory.dmp	family_djvu
behavioral2/memory/1172-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1172-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1172-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1172-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1172-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/32-49-0x0000000000400000-0x0000000000537000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3256	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7044a8f7-1297-4d4f-ba3f-0f48d1781d4d\\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe\" --AutoStart"	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.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
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1912 set thread context of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 5004 set thread context of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.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	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1172	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
1172	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
32	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
32	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1912 wrote to memory of 1172	1912	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	83
PID 1172 wrote to memory of 3256	1172	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	84
PID 1172 wrote to memory of 3256	1172	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	84
PID 1172 wrote to memory of 3256	1172	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	84
PID 1172 wrote to memory of 5004	1172	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	85
PID 1172 wrote to memory of 5004	1172	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	85
PID 1172 wrote to memory of 5004	1172	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	85
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87
PID 5004 wrote to memory of 32	5004	e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe	87

C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
"C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
  "C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.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:1172
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7044a8f7-1297-4d4f-ba3f-0f48d1781d4d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3256
- - C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
    "C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5004
  - - C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
      "C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:32

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
192f72064f34e2a76c064f5a7099bc06

SHA1
73786bd2c681409ecd67f0b8b03985b72dc04c0a

SHA256
b5ba5dce14069343bb2a9fecbde6c489f65bef71ac3e5d72d3bb22bad7980268

SHA512
4fee17ca9173bee2ce42b560e512b9a776a73969965e1b21153459d16d61c0a7f1e9da7920b5128bbc2c2f6036006de91700f84bd0665140c903daded2b2fea0

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

Filesize
170B

MD5
f8a0485346db96175ff2d018ede0e11a

SHA1
17c9090579532c4fe7c162ff4fe0c92d5c00c25b

SHA256
483070605879c41b25647b2c1acd728ea3d9132510497005bbbbc09002dbdfc3

SHA512
bb25523d0010b3dc0aee344ce6a3a0910af264231ccd7775c5ea9a008d394da561740300e6e4eefd2f15c469b217140e932403f42f3d1779cab9094b1e1302d9

Download Submit
C:\Users\Admin\AppData\Local\7044a8f7-1297-4d4f-ba3f-0f48d1781d4d\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe

Filesize
762KB

MD5
441b51a9b3e7dc464918b58b2cf4a28d

SHA1
6e3181efe967ef4ec6e5f5657cc8c6f54c785de6

SHA256
e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d

SHA512
6f134d3765ea847deeb61522545032041cf7a288126b63012068e0b05e69875bc6b6fcc9b10c24872c56f53bb0056430ddc0b4ca25ac4c1c2b6a5972570f442d

Download Submit
memory/32-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/32-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1172-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1172-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1172-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1172-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1172-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1912-2-0x00000000022D0000-0x00000000023EB000-memory.dmp

Filesize
1.1MB

Download
memory/1912-1-0x0000000000960000-0x00000000009F4000-memory.dmp

Filesize
592KB

Download
memory/5004-23-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/5004-19-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads