isrstealer | 403e90d62f1c2185fd1a93cb8d25036eee7685e57d2dd652456cffd12d9ae7e0

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 00:31

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
c1ffe666a1dfdb35dc3c5d4297025d19.exe
Size 368KB
Sample240312-avcadach44
SHA256 403e90d62f1c2185fd1a93cb8d25036eee7685e57d2dd652456cffd12d9ae7e0
MD5 c1ffe666a1dfdb35dc3c5d4297025d19
SHA1 47ccdd6630e0ca19c2da66d7afe79f8f85a60b5d
SHA512 18a05d479674d54bb9d1439c7ace24e24caf32ef750c85cefd66b94039d33c4f1c7cd46cbf26f5310e316b35fec1e4e358af51f2fbde5d74451e831bf2acdf36
SSDEEP 6144:DRAuog7deUAjpXZii1urqy4FVRO4lqaGClZFpRQwg5iwatmzZ/pPQ0:bZCpkuS4FV9l0Cl7nxgtzZBQ0
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

isrstealer spyware stealer trojan

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/3148-27-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3148-30-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3148-35-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/3148-40-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	c1ffe666a1dfdb35dc3c5d4297025d19.exe

Executes dropped EXE 3 IoCs

pid	Process
3108	Able2Extract_Keygen.exe
1540	006.exe
3148	006.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1540 set thread context of 3148	1540	006.exe	103

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3148	006.exe
3148	006.exe
3148	006.exe
3148	006.exe
3148	006.exe
3148	006.exe
3148	006.exe
3148	006.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1540	006.exe
3148	006.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 3108	5072	c1ffe666a1dfdb35dc3c5d4297025d19.exe	90
PID 5072 wrote to memory of 3108	5072	c1ffe666a1dfdb35dc3c5d4297025d19.exe	90
PID 5072 wrote to memory of 3108	5072	c1ffe666a1dfdb35dc3c5d4297025d19.exe	90
PID 5072 wrote to memory of 1540	5072	c1ffe666a1dfdb35dc3c5d4297025d19.exe	92
PID 5072 wrote to memory of 1540	5072	c1ffe666a1dfdb35dc3c5d4297025d19.exe	92
PID 5072 wrote to memory of 1540	5072	c1ffe666a1dfdb35dc3c5d4297025d19.exe	92
PID 1540 wrote to memory of 3148	1540	006.exe	103
PID 1540 wrote to memory of 3148	1540	006.exe	103
PID 1540 wrote to memory of 3148	1540	006.exe	103
PID 1540 wrote to memory of 3148	1540	006.exe	103
PID 1540 wrote to memory of 3148	1540	006.exe	103
PID 1540 wrote to memory of 3148	1540	006.exe	103
PID 1540 wrote to memory of 3148	1540	006.exe	103
PID 1540 wrote to memory of 3148	1540	006.exe	103

C:\Users\Admin\AppData\Local\Temp\c1ffe666a1dfdb35dc3c5d4297025d19.exe
"C:\Users\Admin\AppData\Local\Temp\c1ffe666a1dfdb35dc3c5d4297025d19.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Users\Admin\AppData\Local\Temp\Able2Extract_Keygen.exe
  "C:\Users\Admin\AppData\Local\Temp\Able2Extract_Keygen.exe"
  2⤵
  - Executes dropped EXE
  PID:3108
- C:\Users\Admin\AppData\Local\Temp\006.exe
  "C:\Users\Admin\AppData\Local\Temp\006.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1540
- - C:\Users\Admin\AppData\Local\Temp\006.exe
    "C:\Users\Admin\AppData\Local\Temp\006.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:3148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

006.exe

Path C:\Users\Admin\AppData\Local\Temp\006.exe
Size 168KB
SHA256 0265c56c111e69be3b536e670d302371b79ba8f4669b46bbb4f7a2972d99ae50
MD5 e63538bc7a919c82168acde031f1d0f9
SHA1 ab1363fcb0be44ed3a33dd96a9ab5400b04fe255
SHA512 cbee37b3e70271e8b3af3c086df6795eb45e7813d0182c83166a945a9d98b7acbd23fabc40348903d07f0abca92b0d25d411f16949b612fb104315d049a9752e
SSDEEP 1536:DMTwEZ6WAsGrufD8SBz6ViJ2rTttuSSccjgp+30uYOHRh9Avk1wEZ49zdNTXZfU8:D+weLkuQSBncjNgf31HhAPEEzBfr
MD5 SHA1 SHA512 SSDEEP

Submit Download

Able2Extract_Keygen.exe

Path C:\Users\Admin\AppData\Local\Temp\Able2Extract_Keygen.exe
Size 396KB
SHA256 2de3f75149f25349bea4f27a27cdb0c4441257f67d8a9c6a4b957294d18f0799
MD5 c4efbd75828df685ab7e1740e7bcd157
SHA1 687710f3569b294645aa026acdf78106c3d38e2c
SHA512 6f3fdb64c5fdc64bbe50bad1c78859586c10234eaf83b3d0372b0e3653b360a406bce9eee67a6e3e0f5b765edeb9201752a8ae8dde2de192ec490f52bc6644d8
SSDEEP 6144:SjKmAduJb6ATv633p1MSJo15duJb6ATv633p1MSJo1OF9EHwImPTn4N2b4HuwIAK:SjKPdC6AL+3pRW5dC6AL+3pRWw
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3108-25-0x0000000001260000-0x0000000001270000-memory.dmp

Download

memory/3108-22-0x00000000735F0000-0x0000000073BA1000-memory.dmp

Download

memory/3108-23-0x0000000001260000-0x0000000001270000-memory.dmp

Download

memory/3108-24-0x0000000001260000-0x0000000001270000-memory.dmp

Download

memory/3108-21-0x00000000735F0000-0x0000000073BA1000-memory.dmp

Download

memory/3108-26-0x00000000735F0000-0x0000000073BA1000-memory.dmp

Download

memory/3108-32-0x0000000001260000-0x0000000001270000-memory.dmp

Download

memory/3108-34-0x0000000001260000-0x0000000001270000-memory.dmp

Download

memory/3108-42-0x0000000001260000-0x0000000001270000-memory.dmp

Download

memory/3148-27-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3148-30-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3148-35-0x0000000000400000-0x0000000000414000-memory.dmp

Download

memory/3148-40-0x0000000000400000-0x0000000000414000-memory.dmp

Download