isrstealer | b14bdd109476eaa953a82b4b84b986c51f0a54b191456a2fade24440e290949b

General

Target

8ed0a912c2804f163918c6f99a5f3f85.exe
Size

284KB
MD5

8ed0a912c2804f163918c6f99a5f3f85
SHA1

55115fed0538e4f5c71a7c669c0e0ccbc1edf262
SHA256

b14bdd109476eaa953a82b4b84b986c51f0a54b191456a2fade24440e290949b
SHA512

9dc420a843031d6d8c493f55e5d2240291b838f5490c680591371baeb250165aa89559cd1d2cad6d52523ce29dcdd674a881bff93f4d2741d49d91c564a47063
SSDEEP

6144:b9g7tPq72R2PkhgulFe7H8qDSJ12PYOCpGG+:S7txcMCulF0VDSvMOAG

Score

10^/10

isrstealer 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 3 IoCs

resource	yara_rule
behavioral1/memory/1612-2-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer
behavioral1/memory/1612-7-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer
behavioral1/memory/1612-16-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer

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

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1680-8-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1680-10-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1680-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1680-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1680-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1152 set thread context of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1612 set thread context of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1152	8ed0a912c2804f163918c6f99a5f3f85.exe
1612	8ed0a912c2804f163918c6f99a5f3f85.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1152 wrote to memory of 1612	1152	8ed0a912c2804f163918c6f99a5f3f85.exe	28
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29
PID 1612 wrote to memory of 1680	1612	8ed0a912c2804f163918c6f99a5f3f85.EXE	29

C:\Users\Admin\AppData\Local\Temp\8ed0a912c2804f163918c6f99a5f3f85.exe
"C:\Users\Admin\AppData\Local\Temp\8ed0a912c2804f163918c6f99a5f3f85.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1152
- C:\Users\Admin\AppData\Local\Temp\8ed0a912c2804f163918c6f99a5f3f85.EXE
  "C:\Users\Admin\AppData\Local\Temp\8ed0a912c2804f163918c6f99a5f3f85.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Users\Admin\AppData\Local\Temp\8ed0a912c2804f163918c6f99a5f3f85.EXE
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    PID:1680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1612-2-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/1612-7-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/1612-16-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/1680-8-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1680-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1680-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1680-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1680-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing