isrstealer | 7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c

Analysis

max time kernel
28s
max time network
34s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
06-12-2022 14:58

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General

Target

7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe
Size

269KB
MD5

8269b1107aeefdb83374ecc9149878f5
SHA1

274e6dabe1574074fc4303167030fd21d184789e
SHA256

7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c
SHA512

f16f8c9812fd1b56093882f9d8d3bdcabb43d1fbdcedbfe6bd83cf820316a7b772a913d5a6ce61957c676f6057f9aac614a072bcbdd320c8b52379d937949b3b
SSDEEP

6144:BP8ilqgFAjN98/Un8Ple1evMigXAuQoYE1R:BP8ilPKROs8JvNgXBQPE1

Score

10^/10

isrstealer collection persistence 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 6 IoCs

resource	yara_rule
behavioral1/memory/2016-58-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2016-61-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/2016-60-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2016-75-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2016-86-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2016-89-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1864-85-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1864-87-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1864-88-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/1864-85-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1864-87-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1864-88-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1152-67-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1152-71-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1152-73-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1152-76-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1152-77-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1864-80-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1864-84-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1864-85-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1864-87-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1864-88-0x0000000000400000-0x000000000041F000-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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Update = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1684 set thread context of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 2016 set thread context of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 set thread context of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33

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

System Information Discovery
T1082

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1500	reg.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 1684 wrote to memory of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 1684 wrote to memory of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 1684 wrote to memory of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 1684 wrote to memory of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 1684 wrote to memory of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 1684 wrote to memory of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 1684 wrote to memory of 2016	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	28
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 2016 wrote to memory of 1152	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	29
PID 1684 wrote to memory of 568	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	30
PID 1684 wrote to memory of 568	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	30
PID 1684 wrote to memory of 568	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	30
PID 1684 wrote to memory of 568	1684	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	30
PID 568 wrote to memory of 1500	568	cmd.exe	32
PID 568 wrote to memory of 1500	568	cmd.exe	32
PID 568 wrote to memory of 1500	568	cmd.exe	32
PID 568 wrote to memory of 1500	568	cmd.exe	32
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33
PID 2016 wrote to memory of 1864	2016	7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe	33

C:\Users\Admin\AppData\Local\Temp\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe
"C:\Users\Admin\AppData\Local\Temp\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Users\Admin\AppData\Local\Temp\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe
  "C:\Users\Admin\AppData\Local\Temp\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2016
- - C:\Users\Admin\AppData\Local\Temp\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\cnI8IoQXyE.ini"
    3⤵
    PID:1152
- - C:\Users\Admin\AppData\Local\Temp\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\l2EQjd68zz.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Win Update" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:568
- - C:\Windows\SysWOW64\reg.exe
    reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Win Update" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\7cc8c112ed99935b0a69b1ddd4fe672eaab54310b75e467ca1485b0a2e589a1c.exe"
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:1500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\cnI8IoQXyE.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/1152-71-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1152-77-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1152-76-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1152-73-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1152-67-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1684-65-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/1684-54-0x0000000076AE1000-0x0000000076AE3000-memory.dmp

Filesize
8KB

Download
memory/1684-78-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/1864-80-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1864-88-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1864-87-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1864-85-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1864-84-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2016-58-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2016-55-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2016-56-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2016-75-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2016-86-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2016-60-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2016-89-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads