djvu | 145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b

General

Target

145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
Size

787KB
MD5

2b35bc4e9fdd12520fe7e3920af03851
SHA1

b63e8733d3e7aaf941a2a150debb79c98a331d4e
SHA256

145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b
SHA512

9ccbd30f834ff4ba36acc087b09551e7f3d3d13e9bd5923a6555df171caf50779ddaa7821fa58a50d51b76aa6b387eeb079eadd1ab01c859ffd5ea5bde52e1b1
SSDEEP

12288:CEaK7c5WQWSo/E9NDl9xr9NaQZiwwZ/OPLteD/P7zDQDfa4yA1I+gK:y5WxShT9JlswwZ/zDifa3A1Iv

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5084-2-0x0000000005E70000-0x0000000005F8B000-memory.dmp	family_djvu
behavioral2/memory/4368-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4368-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4368-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4368-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4368-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2888-39-0x0000000000400000-0x0000000000537000-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

3456 icacls.exe

pid	process
3456	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3a67e811-dbfb-4e5c-a0be-26d596d673ab\\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe\" --AutoStart"	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.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
5 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe

description	pid	process	target process
PID 5084 set thread context of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 set thread context of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.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:

145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe

pid	process
4368	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
4368	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
2888	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
2888	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe

C:\Users\Admin\AppData\Local\Temp\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
"C:\Users\Admin\AppData\Local\Temp\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5084

C:\Users\Admin\AppData\Local\Temp\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
"C:\Users\Admin\AppData\Local\Temp\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4368

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\3a67e811-dbfb-4e5c-a0be-26d596d673ab" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3456

C:\Users\Admin\AppData\Local\Temp\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
"C:\Users\Admin\AppData\Local\Temp\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4936

C:\Users\Admin\AppData\Local\Temp\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
"C:\Users\Admin\AppData\Local\Temp\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
1faa26ae52cac819bc42e2ee6f6ef61f

SHA1
4a06963e3a50439e0a23dd8977e7856a1c3ae579

SHA256
bdf3acc2946bbc6cd65df5af28acb5f5155d13fe2d2f889a479c2039413c2c3b

SHA512
fb7551568671c946a3882b9435955624b01fc14fccf80c3d2554582d478aa613d9ec07b86e7f2b4f250933d5eb805bdf3c57239bc26ff854e3f243381e33a04c

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
f827e234b40675fba52928f4c9188083

SHA1
5aa5d17864b25e0a00b4d99ac421f50e70ce430b

SHA256
90c8c339a83232636083b1105baaae734dfd112792dcc9407629de1eb4311eb4

SHA512
7a62eda97804166f576273d9d9a85c62afd81842f61a31bdc6f7182b3001ca641cf2a110431470158b15f01f3f639319583ad482b62007daec0ae8832062237e

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

Filesize
392B

MD5
fdce4b9b3240e3afb2d9d8302fa30471

SHA1
c46627a4ecb3437d9321210941d8138218a3cdd4

SHA256
2df3dba4aec41c921ecab6a6359b9c7efc84cc5e6dbd1964ce70ac6c1305f1ad

SHA512
45c7c94bb26a6eba00f38e2a480a8dd9c9ab43ee44119f0592dcd3738080149fe7c7e6081e4057974d99047ca88a3624924450acf51c903f9e152785c7ac6eba

Download Submit
C:\Users\Admin\AppData\Local\3a67e811-dbfb-4e5c-a0be-26d596d673ab\145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe

Filesize
787KB

MD5
2b35bc4e9fdd12520fe7e3920af03851

SHA1
b63e8733d3e7aaf941a2a150debb79c98a331d4e

SHA256
145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b

SHA512
9ccbd30f834ff4ba36acc087b09551e7f3d3d13e9bd5923a6555df171caf50779ddaa7821fa58a50d51b76aa6b387eeb079eadd1ab01c859ffd5ea5bde52e1b1

Download Submit
memory/2888-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2888-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4368-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4368-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4368-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4368-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4368-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5084-2-0x0000000005E70000-0x0000000005F8B000-memory.dmp

Filesize
1.1MB

Download
memory/5084-1-0x00000000043E0000-0x0000000004481000-memory.dmp

Filesize
644KB

Download

description	pid	process	target process
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 5084 wrote to memory of 4368	5084	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4368 wrote to memory of 3456	4368	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	icacls.exe
PID 4368 wrote to memory of 3456	4368	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	icacls.exe
PID 4368 wrote to memory of 3456	4368	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	icacls.exe
PID 4368 wrote to memory of 4936	4368	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4368 wrote to memory of 4936	4368	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4368 wrote to memory of 4936	4368	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe
PID 4936 wrote to memory of 2888	4936	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe	145dc0c73385f6c3e3fb0ba62ae09f18961da67d21eb6571bc06354926c2274b.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads