djvu | ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054

General

Target

NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
Size

807KB
MD5

c8f255dd1d501e90d5b383fe057d056b
SHA1

66549427459c996431584a6d597e5b755f0f4bae
SHA256

ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054
SHA512

0cf26c04a2c6abf39b684e9501cf0dbc82b0f8d0ecd3d53b62c192c2b1e31d548ea58ce2054f4be40f4afe5a7b7d398c99e75e2a0a62d5ab0070cca45dacff0c
SSDEEP

24576:yQhoQwr33TTTXutUnq2/DFcrfun0EOAO7sHcQEzEJSgaBrI:yQho3r33DDdrhnXRpjJS

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.jazi
offline_id
UlJXrkKDIkENh0vb5W9For2Yyh6riGytjO5p2St1
payload_url
http://brusuax.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

Processes:

resource	yara_rule
behavioral2/memory/4324-2-0x0000000002580000-0x000000000269B000-memory.dmp	family_djvu
behavioral2/memory/3272-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3272-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3272-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3272-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3272-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4308-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4308-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4308-23-0x0000000000400000-0x0000000000537000-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

Processes:

NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Control Panel\International\Geo\Nation	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

208 icacls.exe

pid	process
208	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e0daa11d-c57c-4321-96da-0bb0df1d5734\\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe\" --AutoStart"	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.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.

Processes:

flow ioc

34 api.2ip.ua
35 api.2ip.ua

flow	ioc
34	api.2ip.ua
35	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exeNEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

description	pid	process	target process
PID 4324 set thread context of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 set thread context of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3984 4308 WerFault.exe NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

pid	pid_target	process	target process
3984	4308	WerFault.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

pid	process
3272	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
3272	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exeNEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exeNEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

C:\Users\Admin\AppData\Local\Temp\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4324

C:\Users\Admin\AppData\Local\Temp\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3272

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e0daa11d-c57c-4321-96da-0bb0df1d5734" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:208

C:\Users\Admin\AppData\Local\Temp\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4020

C:\Users\Admin\AppData\Local\Temp\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe" --Admin IsNotAutoStart IsNotTask
4⤵
PID:4308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4308 -s 224
5⤵
- Program crash
PID:3984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4308 -ip 4308
1⤵
PID:4900

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\e0daa11d-c57c-4321-96da-0bb0df1d5734\NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
Filesize
807KB

MD5
c8f255dd1d501e90d5b383fe057d056b

SHA1
66549427459c996431584a6d597e5b755f0f4bae

SHA256
ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054

SHA512
0cf26c04a2c6abf39b684e9501cf0dbc82b0f8d0ecd3d53b62c192c2b1e31d548ea58ce2054f4be40f4afe5a7b7d398c99e75e2a0a62d5ab0070cca45dacff0c

Download Submit
memory/3272-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3272-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3272-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3272-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3272-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4020-18-0x0000000002500000-0x000000000259F000-memory.dmp

Filesize
636KB

Download
memory/4308-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4308-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4308-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4324-1-0x00000000024A0000-0x0000000002540000-memory.dmp

Filesize
640KB

Download
memory/4324-2-0x0000000002580000-0x000000000269B000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4324 wrote to memory of 3272	4324	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 3272 wrote to memory of 208	3272	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	icacls.exe
PID 3272 wrote to memory of 208	3272	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	icacls.exe
PID 3272 wrote to memory of 208	3272	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	icacls.exe
PID 3272 wrote to memory of 4020	3272	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 3272 wrote to memory of 4020	3272	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 3272 wrote to memory of 4020	3272	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe
PID 4020 wrote to memory of 4308	4020	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe	NEAS.ae8c13e3aa1b5b5f4bd7870b47a0a408b462834a4b8efc19ffaa758b674eb054.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads