isrstealer | ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696

Analysis

max time kernel
49s
max time network
57s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07-12-2022 11:13

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General

Target

ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe
Size

488KB
MD5

31849732db31402c9bad435cf3941af9
SHA1

b9520c2470d2a32dc5e78ba377fb924d871fb43f
SHA256

ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696
SHA512

a6001db3badf6fdc35a5b0f7b14793946aa00a5c1c1a3e3631b06e5b12bd957f4017b746c47cbca4803100a3de5eac872f3870907ff16a8f7da1b7be9a243ed4
SSDEEP

12288:LoVfwss338SEFjzWnt/nZPeG582RKL23JRpOcTEfFjrBIPS1xtuq:bEFjzWnt/nZP382RZXAVaPSP

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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1904-59-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/1904-61-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/1904-62-0x0000000000401204-mapping.dmp	family_isrstealer
behavioral1/memory/1904-93-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/1904-111-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/1904-115-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer

NirSoft MailPassView 4 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/568-103-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/568-105-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/568-112-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/568-114-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 5 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/1144-81-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/1144-82-0x000000000043F420-mapping.dmp	WebBrowserPassView
behavioral1/memory/1144-107-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/1144-110-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/1144-113-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView

Nirsoft 12 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1144-81-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/1144-82-0x000000000043F420-mapping.dmp	Nirsoft
behavioral1/memory/568-103-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/276-102-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/276-104-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/568-105-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1144-107-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/276-109-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/1144-110-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/568-112-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/1144-113-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/568-114-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

UPX packed file 13 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/276-86-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/568-91-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/276-96-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/568-97-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/568-101-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/276-100-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/568-103-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/276-102-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/276-104-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/568-105-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/276-109-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/568-112-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/568-114-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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

Processes:

ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe

Suspicious use of SetThreadContext 5 IoCs

Processes:

ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.execcf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.execcf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe

description	pid	Process	procid_target
PID 880 set thread context of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 1904 set thread context of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 2008 set thread context of 1144	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	29
PID 2008 set thread context of 276	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	30
PID 2008 set thread context of 568	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	31

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 AdjustPrivilegeToken 1 IoCs

Processes:

ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe

description	pid	Process
Token: SeDebugPrivilege	276	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.execcf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe

pid	Process
880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe
1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

description	pid	Process	procid_target
PID 880 wrote to memory of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 880 wrote to memory of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 880 wrote to memory of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 880 wrote to memory of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 880 wrote to memory of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 880 wrote to memory of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 880 wrote to memory of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 880 wrote to memory of 1904	880	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	27
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 1904 wrote to memory of 2008	1904	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	28
PID 2008 wrote to memory of 1144	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	29
PID 2008 wrote to memory of 1144	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	29
PID 2008 wrote to memory of 1144	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	29
PID 2008 wrote to memory of 1144	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	29
PID 2008 wrote to memory of 1144	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	29
PID 2008 wrote to memory of 1144	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	29
PID 2008 wrote to memory of 276	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	30
PID 2008 wrote to memory of 276	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	30
PID 2008 wrote to memory of 276	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	30
PID 2008 wrote to memory of 276	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	30
PID 2008 wrote to memory of 276	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	30
PID 2008 wrote to memory of 276	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	30
PID 2008 wrote to memory of 568	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	31
PID 2008 wrote to memory of 568	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	31
PID 2008 wrote to memory of 568	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	31
PID 2008 wrote to memory of 568	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	31
PID 2008 wrote to memory of 568	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	31
PID 2008 wrote to memory of 568	2008	ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe	31

C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe
"C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:880
- C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe
  "C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1904
- - C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe
    "C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2008
  - - C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe
      "C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
      4⤵
      PID:1144
  - - C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe
      "C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:276
  - - C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe
      "C:\Users\Admin\AppData\Local\Temp\ccf8570f8cc95e0c5c12ed9625bf62b39ade884e4a89153bccd0c8f1254bb696.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp
      4⤵
      Accesses Microsoft Outlook accounts
      PID:568

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

memory/276-84-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/276-109-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/276-104-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/276-102-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/276-100-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/276-96-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/276-86-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/276-87-0x0000000000423BC0-mapping.dmp

Download
memory/568-89-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/568-105-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/568-114-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/568-91-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/568-112-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/568-97-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/568-98-0x0000000076871000-0x0000000076873000-memory.dmp

Filesize
8KB

Download
memory/568-92-0x000000000041C3A0-mapping.dmp

Download
memory/568-101-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/568-103-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1144-82-0x000000000043F420-mapping.dmp

Download
memory/1144-81-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1144-79-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1144-107-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1144-110-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1144-113-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1904-93-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1904-57-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1904-115-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1904-111-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1904-56-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1904-59-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1904-61-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1904-62-0x0000000000401204-mapping.dmp

Download
memory/2008-72-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-70-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-69-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-78-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-77-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-73-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-76-0x0000000000408E48-mapping.dmp

Download
memory/2008-67-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-75-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-66-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-71-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2008-94-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download