isrstealer | c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6

General

Target

c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe
Size

1.2MB
MD5

7d9cfe6a233502d318878205a25201cd
SHA1

a7504a71dc6e2cc1bb4ba567e6cb19c72821c727
SHA256

c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6
SHA512

1f519b27773934311a763f0a2b506ddfb65d10bb9b9bb710d66329951a2a6f15725f363848229b567eae1d0ac017d1141b2609369956f43ee5afc2132a4c5f5b
SSDEEP

24576:ZaHMv6Corjqny/Q5ChOHdVVxslvzAE7YFYQDuN85W9W3RU:Z1vqjd/Q5X9nuAGUO85CW3RU

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 2 IoCs

resource	yara_rule
behavioral2/memory/4544-133-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer
behavioral2/memory/4544-141-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3344-138-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3344-140-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3344-142-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3344-143-0x0000000000400000-0x0000000000453000-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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2128 set thread context of 4544	2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	80
PID 4544 set thread context of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81

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 FindShellTrayWindow 3 IoCs

pid	Process
2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe
2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe
2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe
2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe
2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 4544	2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	80
PID 2128 wrote to memory of 4544	2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	80
PID 2128 wrote to memory of 4544	2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	80
PID 2128 wrote to memory of 4544	2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	80
PID 2128 wrote to memory of 4544	2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	80
PID 2128 wrote to memory of 4544	2128	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	80
PID 4544 wrote to memory of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81
PID 4544 wrote to memory of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81
PID 4544 wrote to memory of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81
PID 4544 wrote to memory of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81
PID 4544 wrote to memory of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81
PID 4544 wrote to memory of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81
PID 4544 wrote to memory of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81
PID 4544 wrote to memory of 3344	4544	c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe	81

C:\Users\Admin\AppData\Local\Temp\c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe
"C:\Users\Admin\AppData\Local\Temp\c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe
  "C:\Users\Admin\AppData\Local\Temp\c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4544
- - C:\Users\Admin\AppData\Local\Temp\c2d6970302a2d54db623ad58e149a76367c6c1bbaac819735aceafac7ed195c6.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    PID:3344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3344-138-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3344-140-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3344-142-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3344-143-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4544-133-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4544-141-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download

Analysis

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