djvu | f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446

General

Target

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
Size

731KB
MD5

64e022dce3e1c1412f4781031be231bb
SHA1

df2f2d3075fd5053a555afdcaf9357be4ea6e340
SHA256

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446
SHA512

f7d305be5154e5b5fef83be9d1d8e18fbee0f9e8760015b7558202c63daa6c76f4076b87b226e1654c8822f29954980208856d356daf199a623a1f24eaec66ed
SSDEEP

12288:SiR6GXGnatomI9m2ofp7r/K4h6PHfEVyBJbX5IsXuELtL9PKNsl3KqOU5ajqz8e9:SiZtomI9mZfx7K4gPHsEB/Iou6J3KqO2

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4540-2-0x00000000049C0000-0x0000000004ADB000-memory.dmp	family_djvu
behavioral1/memory/4904-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4904-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4904-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4904-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4904-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1504-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Processes:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1512 icacls.exe

pid	process
1512	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\50319815-a125-4bda-bbe9-211f74bc0d8a\\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe\" --AutoStart"	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.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
18 api.2ip.ua
3 api.2ip.ua

flow	ioc
4	api.2ip.ua
18	api.2ip.ua
3	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exef9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

description	pid	process	target process
PID 4540 set thread context of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 set thread context of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exef9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

pid	process
4904	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
4904	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
1504	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
1504	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exef9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exef9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
"C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4540

C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
"C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4904

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\50319815-a125-4bda-bbe9-211f74bc0d8a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1512

C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
"C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4176

C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
"C:\Users\Admin\AppData\Local\Temp\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1504

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3976,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8
1⤵
PID:424

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
6f6e3fca3096a0e7e7eb59d51f4a5350

SHA1
c978fa12d9045c593d5e7e097037ee465e09c3b2

SHA256
d27a9ba9c11dbd9c2b2bcb61a4128f457e7d15a3db20fad170588821e4003d78

SHA512
c45004cb6359a32eb55f1f2ff762ab948d79991ec890ceaf988d513ff9cd4dc0168deb2235b391b43ca8d69d960ba302fde0ed13a2b0e1dddbd63135f27cb546

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
410B

MD5
dc8fb1163a3d77b145330a629f44de17

SHA1
72178bfe91f245f3c8da3739c14fb55a05cb08f6

SHA256
152734d1747daa68541a8607f8bf900cb026eccbfaadb281132d1d54080a4bd7

SHA512
47abe1eeeaf87e888b221efa9fec9bf1279bfbf721750a757e27d17267ffe72d84c564d23cc2940696d8e960593d464bb0940681f6b114b31404e518a716cf05

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
f842d1151f935a9ad52e70dc5416c138

SHA1
6512de63c0122b2537acb2cdbf9c9d880d013e6c

SHA256
fa63ddadcc75fd382e3401979f1b230793da30dd46644094da4071a061acdecb

SHA512
ba30bff8c9e437219ba1eacd6d91e34634ea1c4018408592f03c1d2a404d1502129277494bbade1a638aa83338f59f4f30678fa22c585098382659cfaf777b1f

Download Submit
C:\Users\Admin\AppData\Local\50319815-a125-4bda-bbe9-211f74bc0d8a\f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
Filesize
731KB

MD5
64e022dce3e1c1412f4781031be231bb

SHA1
df2f2d3075fd5053a555afdcaf9357be4ea6e340

SHA256
f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446

SHA512
f7d305be5154e5b5fef83be9d1d8e18fbee0f9e8760015b7558202c63daa6c76f4076b87b226e1654c8822f29954980208856d356daf199a623a1f24eaec66ed

Download Submit
memory/1504-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1504-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4540-1-0x0000000004920000-0x00000000049B5000-memory.dmp

Filesize
596KB

Download
memory/4540-2-0x00000000049C0000-0x0000000004ADB000-memory.dmp

Filesize
1.1MB

Download
memory/4904-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4904-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4540 wrote to memory of 4904	4540	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4904 wrote to memory of 1512	4904	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	icacls.exe
PID 4904 wrote to memory of 1512	4904	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	icacls.exe
PID 4904 wrote to memory of 1512	4904	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	icacls.exe
PID 4904 wrote to memory of 4176	4904	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4904 wrote to memory of 4176	4904	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4904 wrote to memory of 4176	4904	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe
PID 4176 wrote to memory of 1504	4176	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe	f9383748b3d55540b4b7312239cb3e11acdc09d243a018cb249a5e10a9c24446.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads