djvu | 4465b2c67e0fa589fe083bf917f53fce72c39d2a0e34f7598d20d565394ca22b

Analysis

max time kernel
122s
max time network
130s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-09-2024 08:20

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General

Target

202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
Size

1.1MB
MD5

0d76c9ac68d551cd1ab4301e8d091bde
SHA1

7b1866e55134fe8e69219fc8f8a8e0f515716e22
SHA256

4465b2c67e0fa589fe083bf917f53fce72c39d2a0e34f7598d20d565394ca22b
SHA512

85078f3c03f6c9ec7d26750a19f4dec1ffcd70fe0ef4523f2e90f6a6a64a1abf761a5cc6bfdbe48bbba65a7be58d98244caf99d2a8eda1ef5e0101c77e64f3f0
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8pWQHUq7:F0dwAYZt6C31WeTVRPOhp7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.cosw
offline_id
fTU4hYOJ0niv7WAg9utRTzxXv2TcoEvGPJhzIot1
payload_url
http://uaery.top/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-hhA4nKfJBj 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: 0658JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

resource	yara_rule
behavioral1/files/0x0007000000017444-16.dat	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

pid	Process
2348	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-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4963ac87-63d3-49e3-a272-62d14941d710\\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe\" --AutoStart"	202409070d76c9ac68d551cd1ab4301e8d091bdestop.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
3	api.2ip.ua
4	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
2684	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
2684	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 2348	3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	30
PID 3064 wrote to memory of 2348	3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	30
PID 3064 wrote to memory of 2348	3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	30
PID 3064 wrote to memory of 2348	3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	30
PID 3064 wrote to memory of 2684	3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	32
PID 3064 wrote to memory of 2684	3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	32
PID 3064 wrote to memory of 2684	3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	32
PID 3064 wrote to memory of 2684	3064	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	32

C:\Users\Admin\AppData\Local\Temp\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
"C:\Users\Admin\AppData\Local\Temp\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\4963ac87-63d3-49e3-a272-62d14941d710" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Users\Admin\AppData\Local\Temp\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
  "C:\Users\Admin\AppData\Local\Temp\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

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
f7930a1ecd090565aa4610970ec644a0

SHA1
09d7c77c77dcd5a891b0bbe4b4979de6477e9c38

SHA256
261c60577a010b3b1cde3dc084eadc3e9083acb8de963241319851f98e0bc82b

SHA512
3bda40992a26a4accc53ce26bc1a52d8dfbbcb908bb2b23833c24ad86f83a693213b540fee351fb48142f08a208772c61e01a7ce7f7d4cd3abb23bf54a887188

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
290a9df514da3a846c3606424cecac75

SHA1
124148f45e845bdf8393b9f3cf89bccdb41c5ddb

SHA256
05ef6122879f213199a48c1c6c3f7fc7ce9d573e9d8c8e644fb9867b80d079c4

SHA512
4bddafe9f2b41444119f7af2f20936c0c6855ca1537c36e45c8d708742a749a5c113d03522a401c0c83e6bcdbe5fed8d158524db72a44a37104ca47016a5e7ea

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

Filesize
170B

MD5
f9c67c1feb7769e5999213ac00c3ff50

SHA1
99348fdff4c1cc04b8bfa4fdd44fa4cad663e3be

SHA256
d8fbbed4032e703a5c48fa963eafb92460b8e0b2898b4c64725c19c2640bc12a

SHA512
487e6f9617ca6b48bb0949fff29307dd22fe8cea4caec9097dfadfd4fc01d5c41d77bb0d839cb06dff31bf753e046df0158ed98af5cd704fe6e1532a709148a0

Download Submit
C:\Users\Admin\AppData\Local\4963ac87-63d3-49e3-a272-62d14941d710\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe

Filesize
1.1MB

MD5
0d76c9ac68d551cd1ab4301e8d091bde

SHA1
7b1866e55134fe8e69219fc8f8a8e0f515716e22

SHA256
4465b2c67e0fa589fe083bf917f53fce72c39d2a0e34f7598d20d565394ca22b

SHA512
85078f3c03f6c9ec7d26750a19f4dec1ffcd70fe0ef4523f2e90f6a6a64a1abf761a5cc6bfdbe48bbba65a7be58d98244caf99d2a8eda1ef5e0101c77e64f3f0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\56KJ964X\get[1].php

Filesize
437B

MD5
6910426a598bc0b07dd6ca7c2faf5c22

SHA1
4304d65a08652b167453997e1464cc6ef034be23

SHA256
ebfef207462c29030b8a06068c8cbf1cfeae1304813b9cdbfa2d705b314bf692

SHA512
5e96757fa5daa336968aa07d5fe5525040a081a547dd6bad55bed4539ad76b3f96aabd38f461efdafa4a427963b2a3187cc40dfa60c74e6c6ddf738176381952

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab5409.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\bowsakkdestx.txt

Filesize
449B

MD5
caa078f0348cda98328127c142e3bfed

SHA1
e38274d642c806a3affcca8f7e37b61f591c47e6

SHA256
91faeb982f34313750a83d74c5464abe4e01357d1a7ea4253973509bc0e9d219

SHA512
2e6a5c482b5226079c6b4bd9a706537c372a3b43962f64be6bdd281e3217f963316ef0eba38164890bdf14af6558eb26605320487f0a0c841be9bb813c2ee5d6

Download Submit