djvu | 2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1

Analysis

max time kernel
94s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-10-2024 19:06

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General

Target

2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Size

815KB
MD5

e4274e5648b5755fc555bbdf9bf98c30
SHA1

9be5c993af77a64619f590a3440f55eeacd70e1e
SHA256

2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1
SHA512

4bc460372869c7e3ffd34ffdb39f75943e3ecaeebbe21d7f052dd6eb05c287898dc70de0f3de5b97e80c475d8bde6c2b0bd5b4fb80c5dc9694545819c74c7823
SSDEEP

24576:jcI0vlQ+D2dKw5LvuozLNXmNnZfvxOrEH7U:wI0i4wtvuodmNnlU

Score

10^/10

djvu floxif backdoor discovery persistence privilege_escalation ransomware trojan upx

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.cdtt
offline_id
Bn3q97hwLouKbhkQRNO4SeV07gjdEQVm8NKhg0t1
payload_url
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-FCWSCsjEWS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0845OSkw

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/1540-8-0x0000000002BA0000-0x0000000002CBB000-memory.dmp	family_djvu
behavioral2/memory/3792-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3792-10-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3792-11-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3792-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3792-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1072-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1072-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1072-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral2/files/0x000300000001e62f-1.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000300000001e62f-1.dat	acprotect

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe

Loads dropped DLL 8 IoCs

pid	Process
1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
1072	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
4360	WerFault.exe
4768	WerFault.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4536	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0ef412f8-68b9-48e5-b174-fadbb459c441\\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe\" --AutoStart"	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\e:	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1540 set thread context of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1240 set thread context of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000300000001e62f-1.dat	upx
behavioral2/memory/1540-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3792-16-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1540-15-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/3792-37-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1240-38-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1072-52-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1240-50-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral2/memory/1072-58-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4768	1072	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Token: SeDebugPrivilege	3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Token: SeDebugPrivilege	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
Token: SeDebugPrivilege	1072	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 1540 wrote to memory of 3792	1540	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	82
PID 3792 wrote to memory of 4536	3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	83
PID 3792 wrote to memory of 4536	3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	83
PID 3792 wrote to memory of 4536	3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	83
PID 3792 wrote to memory of 1240	3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	84
PID 3792 wrote to memory of 1240	3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	84
PID 3792 wrote to memory of 1240	3792	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	84
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86
PID 1240 wrote to memory of 1072	1240	2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe	86

C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
"C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
  "C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - Adds Run key to start application
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3792
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0ef412f8-68b9-48e5-b174-fadbb459c441" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4536
- - C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
    "C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1240
  - - C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe
      "C:\Users\Admin\AppData\Local\Temp\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:1072
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 576
        5⤵
        Loads dropped DLL
        Program crash
        
        PID:4768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1072 -ip 1072
1⤵
- Loads dropped DLL
PID:4360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
C:\Users\Admin\AppData\Local\0ef412f8-68b9-48e5-b174-fadbb459c441\2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1N.exe

Filesize
815KB

MD5
e4274e5648b5755fc555bbdf9bf98c30

SHA1
9be5c993af77a64619f590a3440f55eeacd70e1e

SHA256
2001912979da79bad5fece70437c11778cc37315acd9fa22f71732260f8412e1

SHA512
4bc460372869c7e3ffd34ffdb39f75943e3ecaeebbe21d7f052dd6eb05c287898dc70de0f3de5b97e80c475d8bde6c2b0bd5b4fb80c5dc9694545819c74c7823

Download Submit
memory/1072-58-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1072-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-52-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1072-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1072-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1240-40-0x0000000000740000-0x0000000000770000-memory.dmp

Filesize
192KB

Download
memory/1240-39-0x0000000000740000-0x0000000000770000-memory.dmp

Filesize
192KB

Download
memory/1240-50-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1240-51-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1240-42-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1240-38-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1540-8-0x0000000002BA0000-0x0000000002CBB000-memory.dmp

Filesize
1.1MB

Download
memory/1540-15-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1540-7-0x0000000002490000-0x000000000252E000-memory.dmp

Filesize
632KB

Download
memory/1540-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3792-11-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3792-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3792-37-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3792-10-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3792-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3792-16-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/3792-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download