isrstealer | 7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc

General

Target

7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
Size

931KB
MD5

f9382c10ebc3922e40cfe3dcb21739cc
SHA1

b96663cc72702241762f4a6a15ba683f2582a9e3
SHA256

7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc
SHA512

dea5263560f32ef24aaa452e61351dcfe3192fc5a650ddaa6412e648365380154345ecc5e61cd5dd0b6df61f3d03d20cdcdab05ad3c262455d030b4fa36e5d18
SSDEEP

12288:iaWzgMg7v3qnCiMErQohh0F4CCJ8lny/QgSbr09oGE15jSsFZyoopS2A0E:NaHMv6Corjqny/QDnqoRNFZyoGnE

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
behavioral1/memory/2020-58-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2020-61-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/2020-60-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2020-80-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2020-81-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1296-77-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1296-78-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 2 IoCs

resource	yara_rule
behavioral1/memory/1296-77-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1296-78-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/576-65-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/576-69-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/576-70-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/576-71-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1296-72-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1296-76-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1296-77-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1296-78-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/576-79-0x0000000000400000-0x0000000000453000-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-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2024 set thread context of 2020	2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	28
PID 2020 set thread context of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 set thread context of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30

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

System Information Discovery
T1082

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 2020	2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	28
PID 2024 wrote to memory of 2020	2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	28
PID 2024 wrote to memory of 2020	2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	28
PID 2024 wrote to memory of 2020	2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	28
PID 2024 wrote to memory of 2020	2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	28
PID 2024 wrote to memory of 2020	2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	28
PID 2024 wrote to memory of 2020	2024	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	28
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 576	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	29
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30
PID 2020 wrote to memory of 1296	2020	7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe	30

C:\Users\Admin\AppData\Local\Temp\7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
"C:\Users\Admin\AppData\Local\Temp\7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Users\Admin\AppData\Local\Temp\7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
  "C:\Users\Admin\AppData\Local\Temp\7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2020
- - C:\Users\Admin\AppData\Local\Temp\7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\NKGY4IXW6g.ini"
    3⤵
    PID:576
- - C:\Users\Admin\AppData\Local\Temp\7e4228d165e34c231ce640e71995e6cd36a208ca4fbf29a144f4ae0d957e5bcc.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\6LFeMq9zTR.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1296

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/576-65-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/576-79-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/576-71-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/576-70-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/576-69-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1296-72-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1296-76-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1296-77-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1296-78-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2020-60-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2020-58-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2020-56-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2020-55-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2020-80-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2020-81-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2024-54-0x00000000763A1000-0x00000000763A3000-memory.dmp

Filesize
8KB

Download

Analysis

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