isrstealer | e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a

General

Target

e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe
Size

341KB
MD5

68a94a193ca67af0944be8757486bd80
SHA1

6d5d05ff79f122901cbd4121b618571d1852dbd7
SHA256

e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a
SHA512

cfee74e3408b8dd913edc719f787e525d6303416801eeecc1bbf4c5aa51447246952ec79cdac7106e379dca3a209a2bdcda7c19bac22e3822509b11e48ae7130
SSDEEP

6144:Icaxda88spxIhnnwY9ZextcjXmFijjorrsRqEH+bNFbq1f+WvzP3O4yhu:Xa288EeRweZLXmFiPoMwrNxn8

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 4 IoCs

resource	yara_rule
behavioral1/memory/1316-62-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1316-64-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1316-65-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/1316-76-0x0000000000401000-0x0000000000408000-memory.dmp	family_isrstealer

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1876-84-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1876-85-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 2 IoCs

resource	yara_rule
behavioral1/memory/1876-84-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1876-85-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/892-70-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/892-74-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/892-75-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/892-77-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/892-78-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1876-79-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1876-83-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1876-84-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1876-85-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/892-86-0x0000000000400000-0x0000000000453000-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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1316 set thread context of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 set thread context of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1976 wrote to memory of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1976 wrote to memory of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1976 wrote to memory of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1976 wrote to memory of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1976 wrote to memory of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1976 wrote to memory of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1976 wrote to memory of 1316	1976	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	27
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 892	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	28
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29
PID 1316 wrote to memory of 1876	1316	e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe	29

C:\Users\Admin\AppData\Local\Temp\e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe
"C:\Users\Admin\AppData\Local\Temp\e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe
  C:\Users\Admin\AppData\Local\Temp\e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1316
- - C:\Users\Admin\AppData\Local\Temp\e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\KphUaqXUE7.ini"
    3⤵
    PID:892
- - C:\Users\Admin\AppData\Local\Temp\e2583b3df9a994bc3e4fbeaf863dbe8788f53b5baf8cbbbc650c704fc023262a.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\mqEBHcJyzM.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1876

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

memory/892-77-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/892-78-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/892-70-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/892-75-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/892-86-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/892-74-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1316-64-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1316-76-0x0000000000401000-0x0000000000408000-memory.dmp

Filesize
28KB

Download
memory/1316-60-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1316-62-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1316-59-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1876-83-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1876-79-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1876-84-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1876-85-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1976-55-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

Filesize
8KB

Download
memory/1976-56-0x00000000002E0000-0x00000000002EC000-memory.dmp

Filesize
48KB

Download
memory/1976-58-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1976-54-0x00000000013E0000-0x000000000143C000-memory.dmp

Filesize
368KB

Download
memory/1976-57-0x00000000002F0000-0x00000000002FE000-memory.dmp

Filesize
56KB

Download

Analysis

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