isrstealer | 8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b

General

Target

8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
Size

746KB
MD5

b1d63ea494b854963eefc6e0402160d4
SHA1

c2f3eff9fc4e1b315071857095430ef423ae50b9
SHA256

8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b
SHA512

33a801ae1ead10565cc26389057046f7a77ecdec0635764fa745ebca0a67a5dd4bdb2bdbebc9ff13ec574c78337616d5923c709e02dad2549560c27133fefc47
SSDEEP

12288:qUF0w0d/26SSYTiOp94stU254YcGBciJd:7F0w0VzK4p2NBcin

Score

10^/10

isrstealer collection 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 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/716-59-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/716-61-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/716-62-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/716-70-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/716-78-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/612-76-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/612-77-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/612-79-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/612-76-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/612-77-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/612-79-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/612-71-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/612-75-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/612-76-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/612-77-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/612-79-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

description	pid	process	target process
PID 1104 set thread context of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 set thread context of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 set thread context of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

pid process

716 8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

pid	process
716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

C:\Users\Admin\AppData\Local\Temp\8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
"C:\Users\Admin\AppData\Local\Temp\8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1104

C:\Users\Admin\AppData\Local\Temp\8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
"C:\Users\Admin\AppData\Local\Temp\8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:716

C:\Users\Admin\AppData\Local\Temp\8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\Vr413D7dAM.ini"
3⤵
PID:1488

C:\Users\Admin\AppData\Local\Temp\8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\JfTOnTRXUI.ini"
3⤵
- Accesses Microsoft Outlook accounts
PID:612

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/612-71-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/612-79-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/612-77-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/612-76-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/612-75-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/612-72-0x000000000041C410-mapping.dmp

Download
memory/716-57-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/716-70-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/716-62-0x0000000000401180-mapping.dmp

Download
memory/716-61-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/716-59-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/716-55-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/716-78-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1104-64-0x0000000074760000-0x0000000074D0B000-memory.dmp

Filesize
5.7MB

Download
memory/1104-54-0x0000000075BB1000-0x0000000075BB3000-memory.dmp

Filesize
8KB

Download
memory/1104-56-0x0000000074760000-0x0000000074D0B000-memory.dmp

Filesize
5.7MB

Download
memory/1488-69-0x00000000004512E0-mapping.dmp

Download

description	pid	process	target process
PID 1104 wrote to memory of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 1104 wrote to memory of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 1104 wrote to memory of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 1104 wrote to memory of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 1104 wrote to memory of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 1104 wrote to memory of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 1104 wrote to memory of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 1104 wrote to memory of 716	1104	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 1488	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe
PID 716 wrote to memory of 612	716	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe	8f558ab354bd916a256772c1a33d983fd0cc90241d6374634d3b32ad6dd01e2b.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads