djvu | 56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b

Analysis

max time kernel
121s
max time network
127s
platform
windows10_x64
resource
win10-en-20211014
submitted
08-11-2021 19:27

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General

Target

56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
Size

777KB
MD5

b401489eb0ca1a9dda5b3bbbf10dd8e6
SHA1

dfa92f2f8a1dc83ffba0f9f58efb063634d920ab
SHA256

56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b
SHA512

14e1b6c608ede54432fdf457088308c875f465d7940d7723a6f09c28e17341a3c6f40644de2a13a701b62391cd732bdfbf971ab47406957d9145aae950fa7732

Score

10^/10

djvu vidar 517 discovery persistence ransomware stealer suricata

Malware Config

Extracted

Family

djvu

http://pqkl.org/fhsgtsspen6/get.php

Attributes

extension
.stax
offline_id
7HKlLI6NrOQGMaTs5PqjvV1UcZ3VOcIeyFiH3Wt1
payload_url
http://kotob.top/dl/build2.exe

http://pqkl.org/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. You can get and look video overview decrypt tool: https://we.tl/t-dFmA3YqXzs 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: 0345uSifke

rsa_pubkey.plain

Extracted

Family

vidar

Version

Botnet

517

https://social.chinwag.org/@rspich

Attributes

profile_id
517

Signatures

Detected Djvu ransomware 6 IoCs

resource	yara_rule
behavioral1/memory/2648-116-0x00000000023A0000-0x00000000024BB000-memory.dmp	family_djvu
behavioral1/memory/3128-118-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/3128-117-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3128-119-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2948-124-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/2948-129-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
suricata

Vidar Stealer 4 IoCs

stealer

resource	yara_rule
behavioral1/memory/3680-133-0x0000000000400000-0x00000000004D8000-memory.dmp	family_vidar
behavioral1/memory/3680-134-0x00000000004A115D-mapping.dmp	family_vidar
behavioral1/memory/3416-137-0x00000000021A0000-0x0000000002275000-memory.dmp	family_vidar
behavioral1/memory/3680-138-0x0000000000400000-0x00000000004D8000-memory.dmp	family_vidar

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
3416	build2.exe
3680	build2.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
772	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c9ac1493-e5ee-4c1d-b523-7538f29185ef\\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe\" --AutoStart"	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.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
11	api.2ip.ua
12	api.2ip.ua
19	api.2ip.ua

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2648 set thread context of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2640 set thread context of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 3416 set thread context of 3680	3416	build2.exe	75

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1268	3680	WerFault.exe	75

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 5c000000010000000400000000080000090000000100000054000000305206082b0601050507030206082b06010505070303060a2b0601040182370a030406082b0601050507030406082b0601050507030606082b0601050507030706082b0601050507030106082b0601050507030853000000010000004300000030413022060c2b06010401b231010201050130123010060a2b0601040182373c0101030200c0301b060567810c010330123010060a2b0601040182373c0101030200c0620000000100000020000000d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef40b000000010000001c0000005300650063007400690067006f002000280041004100410029000000140000000100000014000000a0110a233e96f107ece2af29ef82a57fd030a4b41d00000001000000100000002e0d6875874a44c820912e85e964cfdb030000000100000014000000d1eb23a46d17d68fd92564c2f1f1601764d8e349200000000100000036040000308204323082031aa003020102020101300d06092a864886f70d0101050500307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c18414141204365727469666963617465205365727669636573301e170d3034303130313030303030305a170d3238313233313233353935395a307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c1841414120436572746966696361746520536572766963657330820122300d06092a864886f70d01010105000382010f003082010a0282010100be409df46ee1ea76871c4d45448ebe46c883069dc12afe181f8ee402faf3ab5d508a16310b9a06d0c57022cd492d5463ccb66e68460b53eacb4c24c0bc724eeaf115aef4549a120ac37ab23360e2da8955f32258f3dedccfef8386a28c944f9f68f29890468427c776bfe3cc352c8b5e07646582c048b0a891f9619f762050a891c766b5eb78620356f08a1a13ea31a31ea099fd38f6f62732586f07f56bb8fb142bafb7aaccd6635f738cda0599a838a8cb17783651ace99ef4783a8dcf0fd942e2980cab2f9f0e01deef9f9949f12ddfac744d1b98b547c5e529d1f99018c7629cbe83c7267b3e8a25c7c0dd9de6356810209d8fd8ded2c3849c0d5ee82fc90203010001a381c03081bd301d0603551d0e04160414a0110a233e96f107ece2af29ef82a57fd030a4b4300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff307b0603551d1f047430723038a036a0348632687474703a2f2f63726c2e636f6d6f646f63612e636f6d2f414141436572746966696361746553657276696365732e63726c3036a034a0328630687474703a2f2f63726c2e636f6d6f646f2e6e65742f414141436572746966696361746553657276696365732e63726c300d06092a864886f70d010105050003820101000856fc02f09be8ffa4fad67bc64480ce4fc4c5f60058cca6b6bc1449680476e8e6ee5dec020f60d68d50184f264e01e3e6b0a5eebfbc745441bffdfc12b8c74f5af48960057f60b7054af3f6f1c2bfc4b97486b62d7d6bccd2f346dd2fc6e06ac3c334032c7d96dd5ac20ea70a99c1058bab0c2ff35c3acf6c37550987de53406c58effcb6ab656e04f61bdc3ce05a15c69ed9f15948302165036cece92173ec9b03a1e037ada015188ffaba02cea72ca910132cd4e50826ab229760f8905e74d4a29a53bdf2a968e0a26ec2d76cb1a30f9ebfeb68e756f2aef2e32b383a0981b56b85d7be2ded3f1ab7b263e2f5622c82d46a004150f139839f95e93696986e	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
3128	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
3128	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
2948	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
2948	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe
1268	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	1268	WerFault.exe
Token: SeBackupPrivilege	1268	WerFault.exe
Token: SeDebugPrivilege	1268	WerFault.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 2648 wrote to memory of 3128	2648	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	69
PID 3128 wrote to memory of 772	3128	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	70
PID 3128 wrote to memory of 772	3128	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	70
PID 3128 wrote to memory of 772	3128	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	70
PID 3128 wrote to memory of 2640	3128	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	71
PID 3128 wrote to memory of 2640	3128	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	71
PID 3128 wrote to memory of 2640	3128	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	71
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2640 wrote to memory of 2948	2640	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	73
PID 2948 wrote to memory of 3416	2948	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	74
PID 2948 wrote to memory of 3416	2948	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	74
PID 2948 wrote to memory of 3416	2948	56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe	74
PID 3416 wrote to memory of 3680	3416	build2.exe	75
PID 3416 wrote to memory of 3680	3416	build2.exe	75
PID 3416 wrote to memory of 3680	3416	build2.exe	75
PID 3416 wrote to memory of 3680	3416	build2.exe	75
PID 3416 wrote to memory of 3680	3416	build2.exe	75
PID 3416 wrote to memory of 3680	3416	build2.exe	75
PID 3416 wrote to memory of 3680	3416	build2.exe	75
PID 3416 wrote to memory of 3680	3416	build2.exe	75

C:\Users\Admin\AppData\Local\Temp\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
"C:\Users\Admin\AppData\Local\Temp\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\Temp\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
  "C:\Users\Admin\AppData\Local\Temp\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe"
  2⤵
  - Adds Run key to start application
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3128
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c9ac1493-e5ee-4c1d-b523-7538f29185ef" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:772
- - C:\Users\Admin\AppData\Local\Temp\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
    "C:\Users\Admin\AppData\Local\Temp\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2640
  - - C:\Users\Admin\AppData\Local\Temp\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe
      "C:\Users\Admin\AppData\Local\Temp\56fec529e038e9b0bb2cced4e29a4a9619a9c4b55506ffeb6302b7304689180b.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:2948
    - - C:\Users\Admin\AppData\Local\cbe70266-16b1-48b7-8fe0-763ba354eadd\build2.exe
        
        "C:\Users\Admin\AppData\Local\cbe70266-16b1-48b7-8fe0-763ba354eadd\build2.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:3416
      - C:\Users\Admin\AppData\Local\cbe70266-16b1-48b7-8fe0-763ba354eadd\build2.exe
        
        "C:\Users\Admin\AppData\Local\cbe70266-16b1-48b7-8fe0-763ba354eadd\build2.exe"
        6⤵
        Executes dropped EXE
        
        PID:3680
        
        C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1600
        7⤵
        Program crash
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Install Root Certificate

T1130

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2648-116-0x00000000023A0000-0x00000000024BB000-memory.dmp

Filesize
1.1MB

Download
memory/2648-115-0x0000000002300000-0x0000000002392000-memory.dmp

Filesize
584KB

Download
memory/2948-129-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3128-119-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3128-117-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3416-137-0x00000000021A0000-0x0000000002275000-memory.dmp

Filesize
852KB

Download
memory/3416-136-0x0000000002120000-0x000000000219C000-memory.dmp

Filesize
496KB

Download
memory/3680-133-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/3680-138-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download