djvu | 9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
02-06-2024 12:53

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General

Target

9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
Size

1.1MB
MD5

4025241aa35f544c34e1f79cff7f5a3d
SHA1

d064744c4d522406908aaee40d87d9fda54b6339
SHA256

9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6
SHA512

7a74c18e2377bf628b85e2b530ed62825a52193f33e458ebe90116cb210631fa4f1ba4f1809b5bb4c0573bdb66970137182ca8a095cff6712c65cb169363e329
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO83WQHUq7:F0dwAYZt6C31WeTVRPOh37Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test2/get.php

Attributes

extension
.qehu
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0868PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

Processes:

resource yara_rule

C:\Users\Admin\AppData\Local\da53c422-daa3-4b6a-b3ee-f714db1cd9b8\9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe 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

2576 icacls.exe

resource	yara_rule
C:\Users\Admin\AppData\Local\da53c422-daa3-4b6a-b3ee-f714db1cd9b8\9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	family_djvu

pid	process
2576	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\da53c422-daa3-4b6a-b3ee-f714db1cd9b8\\9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe\" --AutoStart"	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.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

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

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

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe

pid	process
2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
2740	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
2740	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe

description	pid	process	target process
PID 2248 wrote to memory of 2576	2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	icacls.exe
PID 2248 wrote to memory of 2576	2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	icacls.exe
PID 2248 wrote to memory of 2576	2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	icacls.exe
PID 2248 wrote to memory of 2576	2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	icacls.exe
PID 2248 wrote to memory of 2740	2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
PID 2248 wrote to memory of 2740	2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
PID 2248 wrote to memory of 2740	2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
PID 2248 wrote to memory of 2740	2248	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe	9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe

C:\Users\Admin\AppData\Local\Temp\9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
"C:\Users\Admin\AppData\Local\Temp\9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2248

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\da53c422-daa3-4b6a-b3ee-f714db1cd9b8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
2⤵
- Modifies file permissions
PID:2576

C:\Users\Admin\AppData\Local\Temp\9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
"C:\Users\Admin\AppData\Local\Temp\9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe" --Admin IsNotAutoStart IsNotTask
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:2740

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

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

MD5
8999aa854e3cae2cc82a314dc12420a3

SHA1
e9d06ba69f37453368b35b0f601e3c391fc36e86

SHA256
d9ce037a484b0cd8841a9f2ff72f44e4c1106b4edd257f76eaf4203e345cf196

SHA512
b840dfcdc27db311280d0731f9b4fc36e0a1a7e16090d6e4936bb1d011994b9a585b2393af9aea80ace8468430309cd26acc5220d39a4173574c4d5198f644be

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
79b62752f1d3f5a062b3ac49994a6cc9

SHA1
7784030da68e5201efe15907b61366dd849cfa92

SHA256
d1183e87d7b9ef00e70bf1007001ee6b4dac4e05fd947a01d7c7e35917b7b3fc

SHA512
050bd77631ed3c0f6baa4b58341c3e0bd5e1b4b981df1e5a4a6c55203889ed2ee1530284f8469940e384ea083397d053b1d5fe5ecfdc9ea2e2e327da08c29a26

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
344B

MD5
342d5eb032e41278d7797579eac26bf2

SHA1
12428c0f2bd32f5dc15bc3001d786e45fd32f7a9

SHA256
57158375b643a7b5b68d28ef3f2db3373259b3daad10dfbcb43067bdd88aa909

SHA512
c9469b44f70c0327dd0e9d77b266de8913f3f4cac4cf4893e731e82f171e55c38b4858834b0ce21dd5949e6eeda348af273e870434c089f84b08e763263a0fb1

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

MD5
9e070a2c7090c006092891234c297cba

SHA1
4c1b11758a80d03d7e1a7ccb656d3eaad507c0c1

SHA256
f1f1ebf7aba158bfdd36ec4aff1e6650086e03921d82a2bdb392d7b9f7efd4f1

SHA512
d14023c35c9a83023d60888ef5dd6d9d5ae5260314c2f8bf12f4ca891b00153e55e1fe2070f8d747521c4336a71f58888f2578ba16c2900c3d039a5a9c861c93

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab9B1.tmp
Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\da53c422-daa3-4b6a-b3ee-f714db1cd9b8\9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6.exe
Filesize
1.1MB

MD5
4025241aa35f544c34e1f79cff7f5a3d

SHA1
d064744c4d522406908aaee40d87d9fda54b6339

SHA256
9660a3b6f287bacbe76f7d4208fbd48e7be4b303e7d4c398b9826912668a5cd6

SHA512
7a74c18e2377bf628b85e2b530ed62825a52193f33e458ebe90116cb210631fa4f1ba4f1809b5bb4c0573bdb66970137182ca8a095cff6712c65cb169363e329

Download Submit