isrstealer | 5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5

General

Target

5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe
Size

437KB
MD5

b8b4652071ae43b10e9007099b74c4c6
SHA1

3bc764cfc503f09338ffdccfeb511a17ab358aaa
SHA256

5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5
SHA512

52c467f58cab90bbb21cde35fa3532e5214e09418918a266e399632d9b89c11d60c429b2a7175ce775c2174bb252a857a51642c07734bb8978ef42da548a67b5
SSDEEP

12288:U2hrIrduT4OTh8b+saZm2znH6NkFbz33/yWZLflDw:lUrdukmh8LZ2Ztz3PVLfJw

Score

10^/10

isrstealer collection 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 5 IoCs

resource	yara_rule
behavioral2/memory/3328-134-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3328-136-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3328-143-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3328-148-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3328-155-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1412-153-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral2/memory/1412-154-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 2 IoCs

resource	yara_rule
behavioral2/memory/1412-153-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral2/memory/1412-154-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4712-141-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4712-144-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4712-145-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4712-146-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1412-150-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/1412-152-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/1412-153-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/1412-154-0x0000000000400000-0x000000000041F000-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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1700 set thread context of 3328	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	82
PID 3328 set thread context of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 set thread context of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe
1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 3328	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	82
PID 1700 wrote to memory of 3328	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	82
PID 1700 wrote to memory of 3328	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	82
PID 1700 wrote to memory of 3328	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	82
PID 1700 wrote to memory of 3328	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	82
PID 1700 wrote to memory of 3328	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	82
PID 1700 wrote to memory of 3328	1700	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	82
PID 3328 wrote to memory of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 wrote to memory of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 wrote to memory of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 wrote to memory of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 wrote to memory of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 wrote to memory of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 wrote to memory of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 wrote to memory of 4712	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	83
PID 3328 wrote to memory of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84
PID 3328 wrote to memory of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84
PID 3328 wrote to memory of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84
PID 3328 wrote to memory of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84
PID 3328 wrote to memory of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84
PID 3328 wrote to memory of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84
PID 3328 wrote to memory of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84
PID 3328 wrote to memory of 1412	3328	5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe	84

C:\Users\Admin\AppData\Local\Temp\5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe
"C:\Users\Admin\AppData\Local\Temp\5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Users\Admin\AppData\Local\Temp\5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe
  "C:\Users\Admin\AppData\Local\Temp\5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3328
- - C:\Users\Admin\AppData\Local\Temp\5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\RMUqKFXzIJ.ini"
    3⤵
    PID:4712
- - C:\Users\Admin\AppData\Local\Temp\5bca2ed68dac168a96e6a1ca77268baa89403add09bcf138826c018c771bc0b5.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\sD7Y0qPT78.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RMUqKFXzIJ.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/1412-154-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1412-153-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1412-152-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1412-150-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1700-137-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/1700-132-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/3328-148-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3328-143-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3328-136-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3328-134-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3328-155-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4712-145-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4712-146-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4712-144-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4712-141-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

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