djvu | 99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2

General

Target

99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
Size

731KB
MD5

87cc3b94f58489d3f71df2487eb54f8b
SHA1

5fa09052fef22288b5546bae205c53384994601f
SHA256

99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2
SHA512

2db91d6f99d759f2dc504c1915a7e38b6a47b859a951ed8667f23ece402bcd188e79e1ce28bc42e14b1f7945fd1ebcbac697ae79640bf9307f8209e8c97cb571
SSDEEP

12288:D7XUPQ0Ay4YTZ6FzNDaV5LogDSbQSB0jpnyPQPdEo3yXP14czJp9H0vqHIBBg2r:D7L0Ay0RNaGgDmb0gcdE1X94c0v3v

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 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5084-2-0x0000000004AE0000-0x0000000004BFB000-memory.dmp	family_djvu
behavioral2/memory/2532-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2532-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2532-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2532-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2532-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-37-0x0000000000400000-0x0000000000537000-memory.dmp	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

3152 icacls.exe

pid	process
3152	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f2df4d46-9605-4dd0-b747-4c750ae5778c\\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe\" --AutoStart"	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.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

1 api.2ip.ua
2 api.2ip.ua
6 api.2ip.ua

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe

description	pid	process	target process
PID 5084 set thread context of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 set thread context of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.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:

99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe

pid	process
2532	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
2532	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
2828	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
2828	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe

C:\Users\Admin\AppData\Local\Temp\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
"C:\Users\Admin\AppData\Local\Temp\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5084

C:\Users\Admin\AppData\Local\Temp\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
"C:\Users\Admin\AppData\Local\Temp\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2532

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f2df4d46-9605-4dd0-b747-4c750ae5778c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3152

C:\Users\Admin\AppData\Local\Temp\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
"C:\Users\Admin\AppData\Local\Temp\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1368

C:\Users\Admin\AppData\Local\Temp\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
"C:\Users\Admin\AppData\Local\Temp\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2828

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

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

MD5
8df6dedd4dd10eb8211463f82b129e29

SHA1
ffc6e51cf829b481d789d8e3e61f6c7096fbde3e

SHA256
a8400cc21263f2c44ccb301a3a1ef66a1ff009fd4d301362fd778e7b23a386d8

SHA512
25fd6d8684ff8db3d40a8fe33267fd01d6456a84f81c7e579f7508c36558cf731a0ec8a2999a539aa5c1985dc45f7bd20d2a14a343b2326030941858f24c57f4

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
98b89ff4dc12bbb9c8b150c0676c1ed4

SHA1
97e749cf53850af83798bef527ed81bd0df705c0

SHA256
87d2d27a682c83a3535b995bfa064a5db2604227a8ec25d70a0167ef0bf08447

SHA512
42e4dc885a39f359758225aaafef7b3666b4a12af1301d57e8fcaa56a18cc76a191c00de7e569dd6e855b9a72f909b61250197a180c24bf094442a92d2855ad2

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

MD5
8156c9b57e0ba5114651ff63d552221c

SHA1
62c50026d966d7aea01b32c3b2db4bd4f102780d

SHA256
cc9d5809dc7175749b78afab11188f906758dd169d08d76418bdc1ca1284b7c8

SHA512
5618ab4ad4a33d335e6e32e40782e7b30ae649458cd33a0448cd0d49599603c7294953da7f7f557a7d990a29508306dc86699957f7de89fc2253f81126af16f1

Download Submit
C:\Users\Admin\AppData\Local\f2df4d46-9605-4dd0-b747-4c750ae5778c\99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
Filesize
731KB

MD5
87cc3b94f58489d3f71df2487eb54f8b

SHA1
5fa09052fef22288b5546bae205c53384994601f

SHA256
99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2

SHA512
2db91d6f99d759f2dc504c1915a7e38b6a47b859a951ed8667f23ece402bcd188e79e1ce28bc42e14b1f7945fd1ebcbac697ae79640bf9307f8209e8c97cb571

Download Submit
memory/2532-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2532-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2532-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2532-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2532-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5084-2-0x0000000004AE0000-0x0000000004BFB000-memory.dmp

Filesize
1.1MB

Download
memory/5084-1-0x0000000004A40000-0x0000000004ADF000-memory.dmp

Filesize
636KB

Download

description	pid	process	target process
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 5084 wrote to memory of 2532	5084	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 2532 wrote to memory of 3152	2532	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	icacls.exe
PID 2532 wrote to memory of 3152	2532	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	icacls.exe
PID 2532 wrote to memory of 3152	2532	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	icacls.exe
PID 2532 wrote to memory of 1368	2532	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 2532 wrote to memory of 1368	2532	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 2532 wrote to memory of 1368	2532	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe
PID 1368 wrote to memory of 2828	1368	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe	99960ae1b9c97e6298161223d1aebd26968c41312ee629d109b967ce6bfffec2.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads