djvu | f2269efe1f069e35eab31911b3ddfdd6b531545a84262d4c2948fd997c483b4a

General

Target

NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe
Size

773KB
MD5

84c63289492b18b12e32dd7bd56f1ea0
SHA1

ab989679e9f7f4789ba4f4d0cba3a8751b51a95c
SHA256

f2269efe1f069e35eab31911b3ddfdd6b531545a84262d4c2948fd997c483b4a
SHA512

232ba4818981cc5259da6a26e0505495d168667f9e3d51cda67ab06f13d767cb5a1ea30058eea52ef4859136a3a9df684edf57d17a601170a624c342f5661fc8
SSDEEP

12288:fb1K4TXbcaDdfatgC6ngtG5MVjOnUy4juu5O3+s36O0F81:zbTrcaDdfjbr+VjOoF5MKOmk

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.mlwq
offline_id
FjtJkuhRHnUARRt9GnbbgUTa6ErhJq4ZM668xSt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2756-2-0x0000000002660000-0x000000000277B000-memory.dmp	family_djvu
behavioral2/memory/3320-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3320-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3320-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3320-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3320-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4240-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4240-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4240-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

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-1-5-21-2890696111-2332180956-3312704074-1000\Control Panel\International\Geo\Nation	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4776	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-1-5-21-2890696111-2332180956-3312704074-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\89252ac4-6361-4a9c-8d14-f578450197c5\\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe\" --AutoStart"	NEAS.84c63289492b18b12e32dd7bd56f1ea0.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
36	api.2ip.ua
37	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2756 set thread context of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2012 set thread context of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99

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
8	4240	WerFault.exe	99

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3320	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe
3320	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 2756 wrote to memory of 3320	2756	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	90
PID 3320 wrote to memory of 4776	3320	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	94
PID 3320 wrote to memory of 4776	3320	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	94
PID 3320 wrote to memory of 4776	3320	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	94
PID 3320 wrote to memory of 2012	3320	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	96
PID 3320 wrote to memory of 2012	3320	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	96
PID 3320 wrote to memory of 2012	3320	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	96
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99
PID 2012 wrote to memory of 4240	2012	NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe	99

C:\Users\Admin\AppData\Local\Temp\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Users\Admin\AppData\Local\Temp\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe
  "C:\Users\Admin\AppData\Local\Temp\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3320
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\89252ac4-6361-4a9c-8d14-f578450197c5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4776
- - C:\Users\Admin\AppData\Local\Temp\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2012
  - - C:\Users\Admin\AppData\Local\Temp\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe
      "C:\Users\Admin\AppData\Local\Temp\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4240
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4240 -s 568
        5⤵
        Program crash
        
        PID:8

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4240 -ip 4240
1⤵
PID:3936

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\89252ac4-6361-4a9c-8d14-f578450197c5\NEAS.84c63289492b18b12e32dd7bd56f1ea0.exe

Filesize
773KB

MD5
84c63289492b18b12e32dd7bd56f1ea0

SHA1
ab989679e9f7f4789ba4f4d0cba3a8751b51a95c

SHA256
f2269efe1f069e35eab31911b3ddfdd6b531545a84262d4c2948fd997c483b4a

SHA512
232ba4818981cc5259da6a26e0505495d168667f9e3d51cda67ab06f13d767cb5a1ea30058eea52ef4859136a3a9df684edf57d17a601170a624c342f5661fc8

Download Submit
memory/2012-18-0x0000000002460000-0x00000000024FA000-memory.dmp

Filesize
616KB

Download
memory/2756-1-0x00000000025C0000-0x0000000002654000-memory.dmp

Filesize
592KB

Download
memory/2756-2-0x0000000002660000-0x000000000277B000-memory.dmp

Filesize
1.1MB

Download
memory/3320-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3320-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3320-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3320-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3320-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4240-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4240-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4240-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads