Analysis Overview
SHA256
4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68
Threat Level: Known bad
The file 4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68 was found to be: Known bad.
Malicious Activity Summary
ISR Stealer
ISR Stealer payload
Nirsoft
NirSoft MailPassView
UPX packed file
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Accesses Microsoft Outlook accounts
Drops desktop.ini file(s)
Suspicious use of SetThreadContext
Drops file in Windows directory
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-07-12 12:35
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-07-12 12:35
Reported
2022-07-12 18:26
Platform
win7-20220414-en
Max time kernel
38s
Max time network
46s
Command Line
Signatures
ISR Stealer
ISR Stealer payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svhost.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1080 set thread context of 1112 | N/A | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | C:\Users\Admin\AppData\Local\Temp\svhost.exe |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe
"C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe"
C:\Windows\SysWOW64\cmd.exe
"cmd.exe"
C:\Users\Admin\AppData\Local\Temp\svhost.exe
"C:\Users\Admin\AppData\Local\Temp\svhost.exe"
Network
Files
memory/1080-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp
memory/1080-55-0x0000000074970000-0x0000000074F1B000-memory.dmp
memory/2004-56-0x0000000000000000-mapping.dmp
memory/1080-57-0x0000000074970000-0x0000000074F1B000-memory.dmp
\Users\Admin\AppData\Local\Temp\svhost.exe
| MD5 | 32827e69b293b99013bbbe37d029245d |
| SHA1 | bc9f80a38f09354d71467a05b0c5a82c3f7dac53 |
| SHA256 | 9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f |
| SHA512 | 58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5 |
memory/1112-59-0x0000000000080000-0x00000000000C2000-memory.dmp
memory/1112-60-0x0000000000080000-0x00000000000C2000-memory.dmp
memory/1112-62-0x0000000000080000-0x00000000000C2000-memory.dmp
memory/1112-65-0x0000000000401180-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\svhost.exe
| MD5 | 32827e69b293b99013bbbe37d029245d |
| SHA1 | bc9f80a38f09354d71467a05b0c5a82c3f7dac53 |
| SHA256 | 9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f |
| SHA512 | 58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5 |
memory/1112-67-0x0000000000080000-0x00000000000C2000-memory.dmp
memory/1080-69-0x0000000074970000-0x0000000074F1B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-07-12 12:35
Reported
2022-07-12 18:26
Platform
win10v2004-20220414-en
Max time kernel
149s
Max time network
179s
Command Line
Signatures
ISR Stealer
ISR Stealer payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
NirSoft MailPassView
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Nirsoft
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svhost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svhost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svhost.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Reads user/profile data of web browsers
Accesses Microsoft Outlook accounts
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts | C:\Users\Admin\AppData\Local\Temp\svhost.exe | N/A |
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3688 set thread context of 4224 | N/A | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | C:\Users\Admin\AppData\Local\Temp\svhost.exe |
| PID 4224 set thread context of 4508 | N/A | C:\Users\Admin\AppData\Local\Temp\svhost.exe | C:\Users\Admin\AppData\Local\Temp\svhost.exe |
| PID 4224 set thread context of 3648 | N/A | C:\Users\Admin\AppData\Local\Temp\svhost.exe | C:\Users\Admin\AppData\Local\Temp\svhost.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | N/A |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\svhost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe
"C:\Users\Admin\AppData\Local\Temp\4b4df849759c4377308e8126e7baee0bf0384fed2dfe03e9273f7cc9069c5b68.exe"
C:\Windows\SysWOW64\cmd.exe
"cmd.exe"
C:\Users\Admin\AppData\Local\Temp\svhost.exe
"C:\Users\Admin\AppData\Local\Temp\svhost.exe"
C:\Users\Admin\AppData\Local\Temp\svhost.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\iAF4B32jLG.ini"
C:\Users\Admin\AppData\Local\Temp\svhost.exe
/scomma "C:\Users\Admin\AppData\Local\Temp\RXARLrLgS6.ini"
Network
| Country | Destination | Domain | Proto |
| NL | 67.26.109.254:80 | tcp | |
| NL | 67.26.109.254:80 | tcp | |
| NL | 8.248.1.254:80 | tcp | |
| NL | 52.178.17.3:443 | tcp | |
| IE | 20.54.110.249:443 | tcp | |
| NL | 104.97.14.80:80 | tcp | |
| NL | 104.97.14.81:80 | tcp | |
| US | 8.8.8.8:53 | chayto.com.ar | udp |
| CA | 149.56.22.100:80 | chayto.com.ar | tcp |
Files
memory/3688-130-0x0000000074DD0000-0x0000000075381000-memory.dmp
memory/2532-131-0x0000000000000000-mapping.dmp
memory/4224-132-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\svhost.exe
| MD5 | 1c9ff7df71493896054a91bee0322ebf |
| SHA1 | 38f1c85965d58b910d8e8381b6b1099d5dfcbfe4 |
| SHA256 | e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa |
| SHA512 | aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab |
memory/4224-133-0x0000000000400000-0x0000000000442000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\svhost.exe
| MD5 | 1c9ff7df71493896054a91bee0322ebf |
| SHA1 | 38f1c85965d58b910d8e8381b6b1099d5dfcbfe4 |
| SHA256 | e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa |
| SHA512 | aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab |
memory/4224-137-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4508-140-0x0000000000000000-mapping.dmp
memory/4508-141-0x0000000000400000-0x0000000000453000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\svhost.exe
| MD5 | 1c9ff7df71493896054a91bee0322ebf |
| SHA1 | 38f1c85965d58b910d8e8381b6b1099d5dfcbfe4 |
| SHA256 | e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa |
| SHA512 | aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab |
memory/4508-144-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4508-145-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4508-146-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3688-147-0x0000000074DD0000-0x0000000075381000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\iAF4B32jLG.ini
| MD5 | d1ea279fb5559c020a1b4137dc4de237 |
| SHA1 | db6f8988af46b56216a6f0daf95ab8c9bdb57400 |
| SHA256 | fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba |
| SHA512 | 720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3 |
memory/4224-149-0x0000000000400000-0x0000000000442000-memory.dmp
memory/3688-150-0x0000000074DD0000-0x0000000075381000-memory.dmp
memory/3648-151-0x0000000000000000-mapping.dmp
memory/3648-152-0x0000000000400000-0x000000000041F000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\svhost.exe
| MD5 | 1c9ff7df71493896054a91bee0322ebf |
| SHA1 | 38f1c85965d58b910d8e8381b6b1099d5dfcbfe4 |
| SHA256 | e8b5da3394bbdd7868122ffd88d9d06afe31bd69d656857910d2f820c32d0efa |
| SHA512 | aa0def62b663743e6c3c022182b35cff33cb9abf08453d5098f3c5d32b2a8b0cd1cc5de64b93e39680c1d1396fef1fd50b642ca3ea4ba1f6d1078321d96916ab |
memory/3648-155-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3648-156-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3648-157-0x0000000000400000-0x000000000041F000-memory.dmp
memory/3648-158-0x0000000000400000-0x000000000041F000-memory.dmp
memory/4224-159-0x0000000000400000-0x0000000000442000-memory.dmp