isrstealer | 9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25

Analysis

max time kernel
128s
max time network
31s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
28/11/2022, 18:24

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General

Target

9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe
Size

411KB
MD5

05de72909298f6ce51e8c0207db5a6c1
SHA1

7a52632ad804a1a3cd8251f2c0a6517207dbde6e
SHA256

9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25
SHA512

00334d94601f35db1a0d6c3e2d9b6c6981b386bf3845ecbd786e86e5e775578b568c2db75ad1f0587cd17dba1ce36a06f7d2a598cb2872767d9588c57adba2d5
SSDEEP

12288:uSazSusUabSl3jl4EkYHJzhZoTLxFHuiN:uL3R4EjVyLnOiN

Score

10^/10

isrstealer collection 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/1804-58-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1804-61-0x0000000000401180-mapping.dmp	family_isrstealer
behavioral1/memory/1804-60-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1804-69-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1804-78-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/1804-79-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/1848-75-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1848-76-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/1848-80-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral1/memory/1848-75-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1848-76-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1848-80-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1848-70-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1848-74-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1848-75-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1848-76-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/1848-80-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	RegSvcs.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1004 set thread context of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1804 set thread context of 1656	1804	RegSvcs.exe	30
PID 1804 set thread context of 1848	1804	RegSvcs.exe	31
PID 1004 set thread context of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe
1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe
1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe
1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe
1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe
1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1804	RegSvcs.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1004 wrote to memory of 1804	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	29
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1656	1804	RegSvcs.exe	30
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1804 wrote to memory of 1848	1804	RegSvcs.exe	31
PID 1004 wrote to memory of 1856	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	32
PID 1004 wrote to memory of 1856	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	32
PID 1004 wrote to memory of 1856	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	32
PID 1004 wrote to memory of 1856	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	32
PID 1004 wrote to memory of 1856	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	32
PID 1004 wrote to memory of 1856	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	32
PID 1004 wrote to memory of 1856	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	32
PID 1004 wrote to memory of 1760	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	33
PID 1004 wrote to memory of 1760	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	33
PID 1004 wrote to memory of 1760	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	33
PID 1004 wrote to memory of 1760	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	33
PID 1004 wrote to memory of 1760	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	33
PID 1004 wrote to memory of 1760	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	33
PID 1004 wrote to memory of 1760	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	33
PID 1004 wrote to memory of 928	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	34
PID 1004 wrote to memory of 928	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	34
PID 1004 wrote to memory of 928	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	34
PID 1004 wrote to memory of 928	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	34
PID 1004 wrote to memory of 928	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	34
PID 1004 wrote to memory of 928	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	34
PID 1004 wrote to memory of 928	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	34
PID 1004 wrote to memory of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35
PID 1004 wrote to memory of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35
PID 1004 wrote to memory of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35
PID 1004 wrote to memory of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35
PID 1004 wrote to memory of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35
PID 1004 wrote to memory of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35
PID 1004 wrote to memory of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35
PID 1004 wrote to memory of 836	1004	9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe	35

C:\Users\Admin\AppData\Local\Temp\9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe
"C:\Users\Admin\AppData\Local\Temp\9d978ed6ac2d5d4d980fb8d4f2190225b1e73ed0c1858f6cdded840c2f579b25.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1804
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\woH3wasmQN.ini"
    3⤵
    PID:1656
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\xl7bkuN8Xg.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1848
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe" /FSILlzCwXB /C:\Users\Admin\AppData\Roaming\FSILlzCwXB\FSILlzCwXB.exe
  2⤵
  PID:1856
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe" /FSILlzCwXB /C:\Users\Admin\AppData\Roaming\FSILlzCwXB\FSILlzCwXB.exe
  2⤵
  PID:1760
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe" /FSILlzCwXB /C:\Users\Admin\AppData\Roaming\FSILlzCwXB\FSILlzCwXB.exe
  2⤵
  PID:928
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe" /FSILlzCwXB /C:\Users\Admin\AppData\Roaming\FSILlzCwXB\FSILlzCwXB.exe
  2⤵
  PID:836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/836-83-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/836-93-0x0000000074AF0000-0x000000007509B000-memory.dmp

Filesize
5.7MB

Download
memory/836-92-0x0000000074AF0000-0x000000007509B000-memory.dmp

Filesize
5.7MB

Download
memory/836-90-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/836-88-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/836-81-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/836-85-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/836-82-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/1004-68-0x0000000074AF0000-0x000000007509B000-memory.dmp

Filesize
5.7MB

Download
memory/1004-77-0x0000000074AF0000-0x000000007509B000-memory.dmp

Filesize
5.7MB

Download
memory/1004-94-0x0000000074AF0000-0x000000007509B000-memory.dmp

Filesize
5.7MB

Download
memory/1004-54-0x0000000075881000-0x0000000075883000-memory.dmp

Filesize
8KB

Download
memory/1804-60-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1804-79-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1804-55-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1804-78-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1804-69-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1804-56-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1804-58-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1848-70-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1848-75-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1848-76-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1848-80-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1848-74-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download