djvu | b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9

Analysis

max time kernel
148s
max time network
154s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
27/08/2024, 17:33

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General

Target

b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
Size

801KB
MD5

04e42207db45792cae0f6d3fd83f0680
SHA1

cb17f3a1bb57541204afd27313b390e5ead5096c
SHA256

b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9
SHA512

b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7
SSDEEP

24576:7oL6YwH+hUfoA5snjj0ZvgCxwaEbNHzy9XSm3XNEGQnA:cL6Yw2UfoOoEwaONQXHNEGe

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://asvb.top/nddddhsspen6/get.php

Attributes

extension
.pcqq
offline_id
3pNdLH1399769YerBBKCxHURRAqLhaXsGw3Fbkt1
payload_url
http://asvb.top/files/penelop/updatewin1.exe

http://asvb.top/files/penelop/updatewin2.exe

http://asvb.top/files/penelop/updatewin.exe

http://asvb.top/files/penelop/3.exe

http://asvb.top/files/penelop/4.exe

http://asvb.top/files/penelop/5.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-TVrnNufMGq 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: 0296Sirj

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

resource	yara_rule
behavioral1/memory/2408-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/560-2-0x0000000001D70000-0x0000000001E8B000-memory.dmp	family_djvu
behavioral1/memory/2408-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2408-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2408-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2744-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Executes dropped EXE 1 IoCs

pid	Process
1172	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3040	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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9860e1b0-610b-428a-9e6e-a8e637093a09\\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe\" --AutoStart"	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 560 set thread context of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 2720 set thread context of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32

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	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
2744	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
2744	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 560 wrote to memory of 2408	560	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	29
PID 2408 wrote to memory of 3040	2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	30
PID 2408 wrote to memory of 3040	2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	30
PID 2408 wrote to memory of 3040	2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	30
PID 2408 wrote to memory of 3040	2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	30
PID 2408 wrote to memory of 2720	2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	31
PID 2408 wrote to memory of 2720	2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	31
PID 2408 wrote to memory of 2720	2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	31
PID 2408 wrote to memory of 2720	2408	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	31
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 2720 wrote to memory of 2744	2720	b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe	32
PID 1792 wrote to memory of 1172	1792	taskeng.exe	37
PID 1792 wrote to memory of 1172	1792	taskeng.exe	37
PID 1792 wrote to memory of 1172	1792	taskeng.exe	37
PID 1792 wrote to memory of 1172	1792	taskeng.exe	37

C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:560
- C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
  "C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2408
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9860e1b0-610b-428a-9e6e-a8e637093a09" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3040
- - C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
    "C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2720
  - - C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
      "C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2744

C:\Windows\system32\taskeng.exe
taskeng.exe {7394545F-4C24-40C9-A475-F3A24ED99231} S-1-5-21-2212144002-1172735686-1556890956-1000:MVFYZPLM\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Users\Admin\AppData\Local\9860e1b0-610b-428a-9e6e-a8e637093a09\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
  C:\Users\Admin\AppData\Local\9860e1b0-610b-428a-9e6e-a8e637093a09\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe --Task
  2⤵
  - Executes dropped EXE
  PID:1172

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

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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
05d532a2794c7d66c633d09ad9a2f77b

SHA1
796772116e716e5b5844d6bc1fac011fbba6e86e

SHA256
d96c6badc889c1759f32f57aae3dfd4893beda1ddc59630b7742b2a9c5a5443c

SHA512
3945e10a150ef601ea67751648ef892c65e3cc4583a650eabaf639ac0351b2946c40c6e2c87e096abf7e32d1bd773fe84d3bbe7dd1f9bdc54ee0d762148a98f0

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

Filesize
342B

MD5
21ce0423b8e07a2eddb25300ae1b203c

SHA1
f24346e1ce531f0a7019d979fea7cdcb7b6504a2

SHA256
8968ccfb403a392985355396c115df333249d5c6a0c792473857367c9349e125

SHA512
207b4c815d369a061cef91b6d212199f0586d6741c9128c91eb75081ac8dda7df2dd2e3d9bf38db7a71801a6c05f3f8ae785c4168c59d8ea7f7bfdb77d1eb175

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

Filesize
170B

MD5
f0f855af2dd4242164817a2f9f0feed8

SHA1
ce91d9d8a9f888c57f0a68109797b1738865329f

SHA256
74e1a85ccb72d1ee7257f3f4352ee7287d658bfa765709ca2f8300e5cbf18610

SHA512
ecd07a822ca498cf0a7ba11de15805233a2c8fb849efeeecabd9f0dc38d5ae84710737e674b343cfdbd366f53e3aa1d03643be95385085a702346ad0a404aae8

Download Submit
C:\Users\Admin\AppData\Local\9860e1b0-610b-428a-9e6e-a8e637093a09\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe

Filesize
801KB

MD5
04e42207db45792cae0f6d3fd83f0680

SHA1
cb17f3a1bb57541204afd27313b390e5ead5096c

SHA256
b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9

SHA512
b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab3F13.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/560-1-0x00000000002A0000-0x0000000000331000-memory.dmp

Filesize
580KB

Download
memory/560-6-0x00000000002A0000-0x0000000000331000-memory.dmp

Filesize
580KB

Download
memory/560-2-0x0000000001D70000-0x0000000001E8B000-memory.dmp

Filesize
1.1MB

Download
memory/560-0-0x00000000002A0000-0x0000000000331000-memory.dmp

Filesize
580KB

Download
memory/1172-67-0x0000000001CA0000-0x0000000001D31000-memory.dmp

Filesize
580KB

Download
memory/2408-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2408-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2408-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2720-35-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2720-31-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2720-30-0x0000000000330000-0x00000000003C1000-memory.dmp

Filesize
580KB

Download
memory/2744-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2744-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download