isrstealer | f00b288866cf27c4219022b29cc90522f05e4af18c9a842e6087c01a7c4e3bed

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
24-10-2024 05:11

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General

Target

7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe
Size

671KB
MD5

7272a067ec56ecfc93f31af259bb1cd6
SHA1

526e98c0d12875fd13e217a8c04b1c8ece14c334
SHA256

f00b288866cf27c4219022b29cc90522f05e4af18c9a842e6087c01a7c4e3bed
SHA512

7d9dcf47f6d45794262c6dfa01b71d2b8dfa4b7cf625e5a14d42936e072514dc25d5fd6e92e448dae7b9a08f8404d38e3e2c1101497da1b47a89a20369bce3cd
SSDEEP

12288:q/h70lWElp014hoE7mUQElmm/0LxFHysxziHZOWltpTCka:q/hGFlS1aoEhMLHHysoNTCka

Score

10^/10

isrstealer collection discovery 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 4 IoCs

resource	yara_rule
behavioral1/memory/2684-8-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/2684-12-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/2684-14-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/2684-74-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer

Detected Nirsoft tools 7 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral1/memory/2908-47-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2812-71-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/2812-72-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/2908-49-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2596-69-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/2812-67-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/2908-51-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2596-69-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2908-47-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/2908-49-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/2908-51-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	AppLaunch.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 2920 set thread context of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2684 set thread context of 2800	2684	AppLaunch.exe	32
PID 2800 set thread context of 2908	2800	AppLaunch.exe	33
PID 2800 set thread context of 2812	2800	AppLaunch.exe	34
PID 2800 set thread context of 2596	2800	AppLaunch.exe	35

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2812-71-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2812-72-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2812-57-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2596-69-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/2812-67-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2596-66-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/2812-65-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2596-63-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/2596-68-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/2812-59-0x0000000000400000-0x0000000000426000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2684	AppLaunch.exe
2684	AppLaunch.exe
2684	AppLaunch.exe
2684	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe
Token: SeDebugPrivilege	2812	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2684	AppLaunch.exe

Suspicious use of WriteProcessMemory 53 IoCs

description	pid	Process	procid_target
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2920 wrote to memory of 2684	2920	7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2684 wrote to memory of 2800	2684	AppLaunch.exe	32
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2908	2800	AppLaunch.exe	33
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2812	2800	AppLaunch.exe	34
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35
PID 2800 wrote to memory of 2596	2800	AppLaunch.exe	35

C:\Users\Admin\AppData\Local\Temp\7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7272a067ec56ecfc93f31af259bb1cd6_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2920
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2800
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
      4⤵
      System Location Discovery: System Language Discovery
      PID:2908
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2812
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2596-69-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2596-68-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2596-60-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2596-63-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2596-66-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2684-74-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2684-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2684-8-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2684-4-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2684-6-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2684-12-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2684-14-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2800-35-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-30-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-40-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-22-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-24-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-26-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-52-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-28-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-70-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-42-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-20-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-34-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-38-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-18-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2800-36-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2812-65-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2812-59-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2812-67-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2812-53-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2812-57-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2812-72-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2812-71-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2908-51-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2908-47-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2908-49-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2908-43-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2920-0-0x0000000073F11000-0x0000000073F12000-memory.dmp

Filesize
4KB

Download
memory/2920-2-0x0000000073F10000-0x00000000744BB000-memory.dmp

Filesize
5.7MB

Download
memory/2920-3-0x0000000073F10000-0x00000000744BB000-memory.dmp

Filesize
5.7MB

Download
memory/2920-15-0x0000000073F10000-0x00000000744BB000-memory.dmp

Filesize
5.7MB

Download
memory/2920-1-0x0000000073F10000-0x00000000744BB000-memory.dmp

Filesize
5.7MB

Download