isrstealer | 8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5

General

Target

8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
Size

247KB
MD5

81ab97fdd0660d08d6f6334116431309
SHA1

0e99bc5fab08cc8b1d379d3addef0f96c3196f3a
SHA256

8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5
SHA512

0d94e66a01f5a4228460bca3d5ed040c585aa4d9ef1f9777e6471b3909cd09ebaedfe3d619005af16bff5e7da8e43dff4ac8b0e4d0c5f39214fde76bf319119e
SSDEEP

6144:f4Ma4fmYPR06+8pB+3Qsu0wtSZvTEiqjmxCm3rF:zN06+84Qs+t6z

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/952-68-0x0000000000400000-0x0000000000417000-memory.dmp	family_isrstealer
behavioral1/memory/952-72-0x0000000000400000-0x0000000000417000-memory.dmp	family_isrstealer
behavioral1/memory/952-73-0x0000000000400000-0x0000000000417000-memory.dmp	family_isrstealer

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/952-55-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/952-58-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/952-62-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/952-67-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/952-68-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/952-72-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/952-73-0x0000000000400000-0x0000000000417000-memory.dmp	upx

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
T1081
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 1 IoCs

description	pid	Process	procid_target
PID 996 set thread context of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
952	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
952	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
952	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
952	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
952	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27
PID 996 wrote to memory of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27
PID 996 wrote to memory of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27
PID 996 wrote to memory of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27
PID 996 wrote to memory of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27
PID 996 wrote to memory of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27
PID 996 wrote to memory of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27
PID 996 wrote to memory of 952	996	8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe	27

C:\Users\Admin\AppData\Local\Temp\8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
"C:\Users\Admin\AppData\Local\Temp\8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:996
- C:\Users\Admin\AppData\Local\Temp\8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
  C:\Users\Admin\AppData\Local\Temp\8e4706364a18071abeaabb5a40a08b43205e77ff7955c6a933efe1f93a3507d5.exe
  2⤵
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Credentials in Files

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/952-68-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/952-55-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/952-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/952-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/952-67-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/952-54-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/952-71-0x0000000075E11000-0x0000000075E13000-memory.dmp

Filesize
8KB

Download
memory/952-72-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/952-73-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/996-59-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/996-61-0x0000000000350000-0x00000000003DF000-memory.dmp

Filesize
572KB

Download
memory/996-65-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download

Analysis

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