isrstealer | 0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5

Analysis

max time kernel
46s
max time network
47s
platform
windows7_x64
resource
win7-20220414-en
submitted
30-05-2022 15:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
Size

439KB
MD5

066d70aad37e93ff30dfea3cd49ccc79
SHA1

0de81c392d9eaa47c2a42e2ea8e0cc33519448b8
SHA256

0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5
SHA512

8d53f0c36c0207ac1cfffee70d6070a24d47bf5e7f5c93d1d21eb6a2f931b08c6680ecb78c4e3c47d5e35737d35363837942c9f42321693059dce84a0008e587

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/1240-65-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1240-67-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1240-68-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/1240-99-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1240-101-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1584-97-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1584-98-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1584-103-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/1584-97-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1584-98-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1584-103-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

Executes dropped EXE 3 IoCs

pid	Process
1240	svhost.exe
564	svhost.exe
1584	svhost.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/564-77-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/564-83-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/564-84-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1584-91-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1584-96-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1584-97-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1584-98-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/564-100-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/564-102-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1584-103-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1240	svhost.exe
1240	svhost.exe

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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svhost.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1588 set thread context of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1240 set thread context of 564	1240	svhost.exe	32
PID 1240 set thread context of 1584	1240	svhost.exe	33

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

System Information Discovery
T1082

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe:Zone.Identifier	cmd.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1240	svhost.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 1260	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	28
PID 1588 wrote to memory of 1260	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	28
PID 1588 wrote to memory of 1260	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	28
PID 1588 wrote to memory of 1260	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	28
PID 1260 wrote to memory of 1468	1260	cmd.exe	30
PID 1260 wrote to memory of 1468	1260	cmd.exe	30
PID 1260 wrote to memory of 1468	1260	cmd.exe	30
PID 1260 wrote to memory of 1468	1260	cmd.exe	30
PID 1588 wrote to memory of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1588 wrote to memory of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1588 wrote to memory of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1588 wrote to memory of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1588 wrote to memory of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1588 wrote to memory of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1588 wrote to memory of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1588 wrote to memory of 1240	1588	0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe	31
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 564	1240	svhost.exe	32
PID 1240 wrote to memory of 1584	1240	svhost.exe	33
PID 1240 wrote to memory of 1584	1240	svhost.exe	33
PID 1240 wrote to memory of 1584	1240	svhost.exe	33
PID 1240 wrote to memory of 1584	1240	svhost.exe	33
PID 1240 wrote to memory of 1584	1240	svhost.exe	33
PID 1240 wrote to memory of 1584	1240	svhost.exe	33
PID 1240 wrote to memory of 1584	1240	svhost.exe	33
PID 1240 wrote to memory of 1584	1240	svhost.exe	33
PID 1240 wrote to memory of 1584	1240	svhost.exe	33

C:\Users\Admin\AppData\Local\Temp\0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe
"C:\Users\Admin\AppData\Local\Temp\0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - NTFS ADS
  - Suspicious use of WriteProcessMemory
  PID:1260
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe.lnk" /f
    3⤵
    PID:1468
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1240
- - C:\Users\Admin\AppData\Local\Temp\svhost.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\jg2ltS7XmW.ini"
    3⤵
    - Executes dropped EXE
    PID:564
- - C:\Users\Admin\AppData\Local\Temp\svhost.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\3vBlCnzPP3.ini"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook accounts
    PID:1584

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe

Filesize
439KB

MD5
066d70aad37e93ff30dfea3cd49ccc79

SHA1
0de81c392d9eaa47c2a42e2ea8e0cc33519448b8

SHA256
0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5

SHA512
8d53f0c36c0207ac1cfffee70d6070a24d47bf5e7f5c93d1d21eb6a2f931b08c6680ecb78c4e3c47d5e35737d35363837942c9f42321693059dce84a0008e587

Download Submit
C:\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
1.6MB

MD5
32827e69b293b99013bbbe37d029245d

SHA1
bc9f80a38f09354d71467a05b0c5a82c3f7dac53

SHA256
9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

SHA512
58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

Download Submit
C:\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
1.6MB

MD5
32827e69b293b99013bbbe37d029245d

SHA1
bc9f80a38f09354d71467a05b0c5a82c3f7dac53

SHA256
9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

SHA512
58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

Download Submit
C:\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
1.6MB

MD5
32827e69b293b99013bbbe37d029245d

SHA1
bc9f80a38f09354d71467a05b0c5a82c3f7dac53

SHA256
9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

SHA512
58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

Download Submit
C:\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
1.6MB

MD5
32827e69b293b99013bbbe37d029245d

SHA1
bc9f80a38f09354d71467a05b0c5a82c3f7dac53

SHA256
9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

SHA512
58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

Download Submit
\Users\Admin\AppData\Local\Temp\FolderN\name.exe

Filesize
439KB

MD5
066d70aad37e93ff30dfea3cd49ccc79

SHA1
0de81c392d9eaa47c2a42e2ea8e0cc33519448b8

SHA256
0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5

SHA512
8d53f0c36c0207ac1cfffee70d6070a24d47bf5e7f5c93d1d21eb6a2f931b08c6680ecb78c4e3c47d5e35737d35363837942c9f42321693059dce84a0008e587

Download Submit
\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
1.6MB

MD5
32827e69b293b99013bbbe37d029245d

SHA1
bc9f80a38f09354d71467a05b0c5a82c3f7dac53

SHA256
9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

SHA512
58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

Download Submit
\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
1.6MB

MD5
32827e69b293b99013bbbe37d029245d

SHA1
bc9f80a38f09354d71467a05b0c5a82c3f7dac53

SHA256
9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

SHA512
58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

Download Submit
\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
1.6MB

MD5
32827e69b293b99013bbbe37d029245d

SHA1
bc9f80a38f09354d71467a05b0c5a82c3f7dac53

SHA256
9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

SHA512
58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

Download Submit
memory/564-84-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/564-83-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/564-77-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/564-100-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/564-102-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1240-65-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1240-99-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1240-101-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1240-67-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1240-62-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1240-63-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1584-103-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1584-98-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1584-97-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1584-96-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1584-91-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1588-88-0x0000000071F40000-0x00000000720DB000-memory.dmp

Filesize
1.6MB

Download
memory/1588-57-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/1588-54-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/1588-89-0x00000000720E0000-0x0000000072CBE000-memory.dmp

Filesize
11.9MB

Download
memory/1588-71-0x0000000073C50000-0x00000000743EC000-memory.dmp

Filesize
7.6MB

Download
memory/1588-85-0x0000000074580000-0x0000000074B2B000-memory.dmp

Filesize
5.7MB

Download
memory/1588-87-0x0000000073C50000-0x00000000743EC000-memory.dmp

Filesize
7.6MB

Download
memory/1588-78-0x0000000073AC0000-0x0000000073C48000-memory.dmp

Filesize
1.5MB

Download
memory/1588-86-0x0000000072CC0000-0x00000000737B8000-memory.dmp

Filesize
11.0MB

Download
memory/1588-61-0x0000000072CC0000-0x00000000737B8000-memory.dmp

Filesize
11.0MB

Download
memory/1588-104-0x00000000720E0000-0x0000000072CBE000-memory.dmp

Filesize
11.9MB

Download