isrstealer | 2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380

Analysis

max time kernel
78s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2022, 04:02

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe
Size 1.7MB
Sample220919-elt62sbcgp
SHA256 2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380
MD5 9068cdecf8eb0c742708d88e3a4094ec
SHA1 c1132523dc959449f444e337c62d96dfd7f8ebb6
SHA512 d7793a3ea008023bc25a4c6485e4178aae9f95fbf367c5044a939e9356c8911e9309c99c643b7566f5d426cc9b99d05f11f4aba71447afedd35e474558af4745
SSDEEP 24576:DRmJkcoQricOIQxiZY1iaWQ6h8Q/7fBQFKr0iiH0sUyNHtv4au9VicGrovOLDB3K:wJZoQrbTFZY1ia94BpxiH00vACLL9O3L
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

isrstealer collection persistence spyware stealer trojan upx

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 4 IoCs

resource	yara_rule
behavioral2/memory/4124-133-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/4124-142-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/4124-152-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/4124-153-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/176-146-0x0000000000000000-mapping.dmp	MailPassView
behavioral2/memory/176-150-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral2/memory/176-151-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral2/memory/176-146-0x0000000000000000-mapping.dmp	Nirsoft
behavioral2/memory/176-150-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral2/memory/176-151-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4960-138-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-140-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-141-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-143-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-144-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/176-149-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/176-147-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/176-150-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/176-151-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe"	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2140 set thread context of 4124	2140	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	79
PID 4124 set thread context of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 set thread context of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\som.settings	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe
File opened for modification	C:\Windows\som.settings	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 4124	2140	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	79
PID 2140 wrote to memory of 4124	2140	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	79
PID 2140 wrote to memory of 4124	2140	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	79
PID 2140 wrote to memory of 4124	2140	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	79
PID 2140 wrote to memory of 4124	2140	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	79
PID 4124 wrote to memory of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 wrote to memory of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 wrote to memory of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 wrote to memory of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 wrote to memory of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 wrote to memory of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 wrote to memory of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 wrote to memory of 4960	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	80
PID 4124 wrote to memory of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85
PID 4124 wrote to memory of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85
PID 4124 wrote to memory of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85
PID 4124 wrote to memory of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85
PID 4124 wrote to memory of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85
PID 4124 wrote to memory of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85
PID 4124 wrote to memory of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85
PID 4124 wrote to memory of 176	4124	2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe	85

C:\Users\Admin\AppData\Local\Temp\2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe
"C:\Users\Admin\AppData\Local\Temp\2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Users\Admin\AppData\Local\Temp\2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe
  C:\Users\Admin\AppData\Local\Temp\2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4124
- - C:\Users\Admin\AppData\Local\Temp\2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\9VKZNKVKVv.ini"
    3⤵
    PID:4960
- - C:\Users\Admin\AppData\Local\Temp\2b0869ed13928d6b584dbefa2e15faa1fd377f93d4ef31a187e468ca432a6380.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\iiaIK8iySd.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:176

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

9VKZNKVKVv.ini

Path C:\Users\Admin\AppData\Local\Temp\9VKZNKVKVv.ini
Size 5B
SHA256 fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
MD5 d1ea279fb5559c020a1b4137dc4de237
SHA1 db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA512 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3
MD5 SHA1 SHA512

Submit Download

memory/176-149-0x0000000000400000-0x000000000041F000-memory.dmp

Download

memory/176-151-0x0000000000400000-0x000000000041F000-memory.dmp

Download

memory/176-150-0x0000000000400000-0x000000000041F000-memory.dmp

Download

memory/176-147-0x0000000000400000-0x000000000041F000-memory.dmp

Download

memory/4124-133-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/4124-153-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/4124-152-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/4124-142-0x0000000000400000-0x0000000000442000-memory.dmp

Download

memory/4960-140-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4960-144-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4960-143-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4960-141-0x0000000000400000-0x0000000000453000-memory.dmp

Download

memory/4960-138-0x0000000000400000-0x0000000000453000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads