djvu | 488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779

General

Target

488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe
Size

735KB
MD5

e02fd1eee5d9fc50ac508abf6896982e
SHA1

7c93d2e15ef9201a6f7154f924f2acd05b62511c
SHA256

488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779
SHA512

1e78d958c25e41b217b0b5ac97b5fa0c643a6d8a997314d8d531372e497357e863792446bd812228d9a1b4aec054be3504d8337df6515535c69efca0e0bd6314
SSDEEP

12288:T4wbKp60OwVHlsiOnNjS9zVy4sn232h2kkjo7UModgPcBJa0sQtaG4l:TLp0OwjiN25VJsnkkkk7s/tTtaGw

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://ring2.ug/As73yhsyU34578hxxx1/SDf565g/get.php

Attributes

extension
.reha
offline_id
7757TLxCRXnSjhJoq4TruFpvTlag0OKn6hPITYt1
payload_url
http://ring2.ug/files/cost/updatewin1.exe

http://ring2.ug/files/cost/updatewin2.exe

http://ring2.ug/files/cost/updatewin.exe

http://ring2.ug/files/cost/3.exe

http://ring2.ug/files/cost/4.exe

http://ring2.ug/files/cost/5.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like photos, 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-UdTNsLeiJA 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: 0199a7d6a8sda

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1984-2-0x0000000000640000-0x000000000075A000-memory.dmp	family_djvu
behavioral1/memory/1984-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1984-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1984-23-0x0000000000640000-0x000000000075A000-memory.dmp	family_djvu
behavioral1/memory/3000-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3000-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3000-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3000-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

Processes:

icacls.exe

pid	Process
2844	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\bf8c0645-2738-4a64-b24e-40f9f530362d\\488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe\" --AutoStart"	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.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.

Processes:

flow	ioc
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

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 3 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

Processes:

488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exeicacls.exe488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe

pid	Process
1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe
1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe
3000	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe
3000	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe

description	pid	Process	procid_target
PID 1984 wrote to memory of 2844	1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe	31
PID 1984 wrote to memory of 2844	1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe	31
PID 1984 wrote to memory of 2844	1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe	31
PID 1984 wrote to memory of 2844	1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe	31
PID 1984 wrote to memory of 3000	1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe	32
PID 1984 wrote to memory of 3000	1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe	32
PID 1984 wrote to memory of 3000	1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe	32
PID 1984 wrote to memory of 3000	1984	488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe	32

C:\Users\Admin\AppData\Local\Temp\488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe
"C:\Users\Admin\AppData\Local\Temp\488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\bf8c0645-2738-4a64-b24e-40f9f530362d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Users\Admin\AppData\Local\Temp\488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe
  "C:\Users\Admin\AppData\Local\Temp\488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3000

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

System Information Discovery

1

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
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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
14d2c688b96f2675df8a0801cb70191a

SHA1
dd81830fd01bc29fb1063601412473211c6f736a

SHA256
dce7db2534266472dd37f244ff092f09661abe30df3c8dac7820f628358984cc

SHA512
1a89385874fa3d0ab84ae0840c275ef6d8d5b3bf6b35a7e3812b50c18333e1759f4bfc785ee5859b33d2f659fe1fc578c61649e52686fbff1711f84cf72b3ef1

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

Filesize
170B

MD5
e1b47c19eba43f4d5238e9ded79c0b16

SHA1
8e50e19be85732287f86d2d0ca29182e57abe1fc

SHA256
a1cc4e702605686a90c58e2d8a28dc0e99140d0eb431c593fe23551b508c28a5

SHA512
ed2c19ed789a3d15719102f3dacd91a6ce3f089a70dc00d35fd360512ce8fdefabdc979ed7f4f0370773c408028a24cc785b4b73b8f1aa8d39dca04c3d9e0f40

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabB3F4.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\bf8c0645-2738-4a64-b24e-40f9f530362d\488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779.exe

Filesize
735KB

MD5
e02fd1eee5d9fc50ac508abf6896982e

SHA1
7c93d2e15ef9201a6f7154f924f2acd05b62511c

SHA256
488fc31a56df22ee62120505326df0699627525c17fbdde472437f447ba2b779

SHA512
1e78d958c25e41b217b0b5ac97b5fa0c643a6d8a997314d8d531372e497357e863792446bd812228d9a1b4aec054be3504d8337df6515535c69efca0e0bd6314

Download Submit
memory/1984-1-0x0000000000540000-0x00000000005D1000-memory.dmp

Filesize
580KB

Download
memory/1984-23-0x0000000000640000-0x000000000075A000-memory.dmp

Filesize
1.1MB

Download
memory/1984-22-0x0000000000540000-0x00000000005D1000-memory.dmp

Filesize
580KB

Download
memory/1984-0-0x0000000000540000-0x00000000005D1000-memory.dmp

Filesize
580KB

Download
memory/1984-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1984-2-0x0000000000640000-0x000000000075A000-memory.dmp

Filesize
1.1MB

Download
memory/1984-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3000-25-0x0000000000350000-0x00000000003E1000-memory.dmp

Filesize
580KB

Download
memory/3000-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3000-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3000-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3000-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3000-46-0x0000000000400000-0x0000000000537000-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