djvu | d91912b4b945e88e881e54573390e6723cfc41916b6546453b59e60f9beee337

Resubmissions

05-11-2024 03:18

241105-dtxrgatbpg 10

Analysis

max time kernel
144s
max time network
125s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
05-11-2024 03:18

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
Size

983KB
MD5

e15e3cfa542459e8d87e8bfdf70a38a1
SHA1

1c98fbf7b780fc8ab7f73d468ab77b41570c9665
SHA256

c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286
SHA512

fd55639cc4f757f90a01236b10bf33bd678ef7a141c6538a5285133aa8d610bb0bf287043717557a26d28a924f3c44fbf37c13421f27a389f2e8fc76ce4b91fe
SSDEEP

24576:Fp90jN2CdssXMZ/ggHEfsLJ4qFKqyqG5nFYR1t:N0NDdssygGl94qFKqyqYa

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://dell1.ug/hosuhf37t5iqy3guygg6w4guiner/37tiuywgw/get.php

Attributes

extension
.meds
offline_id
Pq9d1D32xIxjAlRK7OkLl3utdbWN8syVVEm35xt1
payload_url
http://dell1.ug/files/cost/updatewin1.exe

http://dell1.ug/files/cost/updatewin2.exe

http://dell1.ug/files/cost/updatewin.exe

http://dell1.ug/files/cost/3.exe

http://dell1.ug/files/cost/4.exe

http://dell1.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-ZFjRnJfc9f 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: 162Ad768734uygjdfg

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 7 IoCs

Processes:

resource	yara_rule
behavioral21/memory/576-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral21/memory/576-2-0x0000000001E90000-0x0000000001FAA000-memory.dmp	family_djvu
behavioral21/memory/576-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral21/memory/2796-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral21/memory/2796-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral21/memory/2796-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral21/memory/2796-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

Processes:

icacls.exe

pid	Process
2868	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9c582dc1-aa3f-45ae-a005-a8fac535b6a1\\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe\" --AutoStart"	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.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:

icacls.exec2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exec2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exec2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

pid	Process
576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
2796	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
2796	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

description	pid	Process	procid_target
PID 576 wrote to memory of 2868	576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe	32
PID 576 wrote to memory of 2868	576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe	32
PID 576 wrote to memory of 2868	576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe	32
PID 576 wrote to memory of 2868	576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe	32
PID 576 wrote to memory of 2796	576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe	33
PID 576 wrote to memory of 2796	576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe	33
PID 576 wrote to memory of 2796	576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe	33
PID 576 wrote to memory of 2796	576	c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe	33

C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
"C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:576
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\9c582dc1-aa3f-45ae-a005-a8fac535b6a1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
  "C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2796

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

Replay Monitor

Loading Replay Monitor...

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
2daaff7a55064bbdbf9d9c470dbfb339

SHA1
2d812e2bf172664f9fc3a250cf0c05f185bf181d

SHA256
4f6324f9a58b326db01fea4e748a402edc5e1064c24b7dd8c9f9c0b904dc827d

SHA512
7ea18e1faf811a6261e7b26f96b7ce248c77690836fe6025efb682d36e66060d837ca85a033e5ded73583a14eeca92ca642786e4c45e156b2b1914250843a11a

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

Filesize
170B

MD5
6dc4b4494aeb1eec5d1d05d8d7fa27fe

SHA1
07054fa82f0bbed8557bfd6bbd27c8753f4200f0

SHA256
fbbe21e6f1ca1b2a35ac3feb1434c67357710689799680ac537f626c57979dcb

SHA512
0aa80e8ed42c3d8953575d4677c457fc329b86fe4360a355f53ad63b201309e0e59182a65415503432654fd27251b68a2084c582336fcb140d7c5833bc7abf57

Download Submit
C:\Users\Admin\AppData\Local\9c582dc1-aa3f-45ae-a005-a8fac535b6a1\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

Filesize
983KB

MD5
e15e3cfa542459e8d87e8bfdf70a38a1

SHA1
1c98fbf7b780fc8ab7f73d468ab77b41570c9665

SHA256
c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286

SHA512
fd55639cc4f757f90a01236b10bf33bd678ef7a141c6538a5285133aa8d610bb0bf287043717557a26d28a924f3c44fbf37c13421f27a389f2e8fc76ce4b91fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabE447.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/576-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/576-0-0x0000000001DC0000-0x0000000001E85000-memory.dmp

Filesize
788KB

Download
memory/576-1-0x0000000001DC0000-0x0000000001E85000-memory.dmp

Filesize
788KB

Download
memory/576-2-0x0000000001E90000-0x0000000001FAA000-memory.dmp

Filesize
1.1MB

Download
memory/576-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-23-0x0000000000540000-0x0000000000605000-memory.dmp

Filesize
788KB

Download
memory/2796-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download