isrstealer | 221f3998c5189acabd57e4c5a83e85bacf8f092ed32a2dcd671e07614b449149

Analysis

max time kernel
142s
max time network
125s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
02-07-2024 07:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe
Size

538KB
MD5

1e7d901906c37e2fd8807f5f8edcdae1
SHA1

739164b6ca685b7f0748b703c1fc2390d86351bb
SHA256

221f3998c5189acabd57e4c5a83e85bacf8f092ed32a2dcd671e07614b449149
SHA512

6c7eec8b97bc5dd92a35ed79de1915539314b71fc2c3bf3880beceb587de80c56f2ccac39cc80e3e57aff5243c07c1b7754a216ea68b61a9e0f8b75613bfca13
SSDEEP

12288:zr0uzUAVWZOvAI4LsYs3WgEE+LkXB9gHSxa4qTFgqx:zN58ZKAI4LsYs3Wgl+LkXRa4qTFgM

Score

10^/10

isrstealer 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 2 IoCs

resource	yara_rule
behavioral1/memory/2636-67-0x0000000000400000-0x0000000000464000-memory.dmp	family_isrstealer
behavioral1/memory/2636-90-0x0000000000400000-0x0000000000464000-memory.dmp	family_isrstealer

Executes dropped EXE 5 IoCs

pid	Process
2408	123456.exe
2192	Patch IDM 6.xx.exe
2636	123456.exe
2684	Patch IDM 6.xx.exe
2504	123456.exe

Loads dropped DLL 1 IoCs

pid	Process
2684	Patch IDM 6.xx.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
T1552.001

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2684-64-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2504-79-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2504-77-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2504-75-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2504-78-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2684-69-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2684-68-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2684-57-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2684-53-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2684-49-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2684-83-0x0000000000400000-0x0000000000444000-memory.dmp	upx
behavioral1/memory/2504-87-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2408 set thread context of 2636	2408	123456.exe	31
PID 2192 set thread context of 2684	2192	Patch IDM 6.xx.exe	30
PID 2636 set thread context of 2504	2636	123456.exe	32

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2408	123456.exe
2192	Patch IDM 6.xx.exe
2636	123456.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2408	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	28
PID 2188 wrote to memory of 2408	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	28
PID 2188 wrote to memory of 2408	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	28
PID 2188 wrote to memory of 2408	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	28
PID 2188 wrote to memory of 2192	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	29
PID 2188 wrote to memory of 2192	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	29
PID 2188 wrote to memory of 2192	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	29
PID 2188 wrote to memory of 2192	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	29
PID 2188 wrote to memory of 2192	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	29
PID 2188 wrote to memory of 2192	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	29
PID 2188 wrote to memory of 2192	2188	1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe	29
PID 2408 wrote to memory of 2636	2408	123456.exe	31
PID 2408 wrote to memory of 2636	2408	123456.exe	31
PID 2408 wrote to memory of 2636	2408	123456.exe	31
PID 2408 wrote to memory of 2636	2408	123456.exe	31
PID 2408 wrote to memory of 2636	2408	123456.exe	31
PID 2408 wrote to memory of 2636	2408	123456.exe	31
PID 2408 wrote to memory of 2636	2408	123456.exe	31
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2192 wrote to memory of 2684	2192	Patch IDM 6.xx.exe	30
PID 2636 wrote to memory of 2504	2636	123456.exe	32
PID 2636 wrote to memory of 2504	2636	123456.exe	32
PID 2636 wrote to memory of 2504	2636	123456.exe	32
PID 2636 wrote to memory of 2504	2636	123456.exe	32
PID 2636 wrote to memory of 2504	2636	123456.exe	32
PID 2636 wrote to memory of 2504	2636	123456.exe	32
PID 2636 wrote to memory of 2504	2636	123456.exe	32
PID 2636 wrote to memory of 2504	2636	123456.exe	32
PID 2636 wrote to memory of 2504	2636	123456.exe	32

C:\Users\Admin\AppData\Local\Temp\1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1e7d901906c37e2fd8807f5f8edcdae1_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2188
- C:\123456.exe
  "C:\123456.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2408
- - C:\123456.exe
    C:\\123456.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2636
  - - C:\123456.exe
      /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
      4⤵
      Executes dropped EXE
      PID:2504
- C:\Patch IDM 6.xx.exe
  "C:\Patch IDM 6.xx.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\Patch IDM 6.xx.exe
    "C:\\Patch IDM 6.xx.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\123456.exe

Filesize
299KB

MD5
8285e8a3752fe609776497efde3ddcd4

SHA1
49cf1f293cdf0271600176ce08931a022f42731d

SHA256
3c59f214ae5d53379f36522e41b71f429de802aac74951e239d17f98bda340bd

SHA512
a6bbf39a8380b076ff9f9d7c940d863d63662d6a06de53e90b857c4a15ab95ab3e65b8b5a17af25fc4da435df07ed59b562c691c38ba83e82df3dc70417b97a8

Download Submit
C:\Patch IDM 6.xx.exe

Filesize
215KB

MD5
9fd4ec851eea8905f5cf0e5b18928a5d

SHA1
580e42f43b3fcf72023f87a726f108f08b22d228

SHA256
eadb6538f312408451f6033bad587b34f7f5b265c76a27de12fb5ec177eaec30

SHA512
69e1ff1005afac8d050b3cf0ae9d7d2da69ca20a0b0bbee21be81bd54416dc59bd0e2d26b90e214a435bc66d35d3627798e25f1332059d3b4e164eb2f8367a35

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-268080393-3149932598-1824759070-1000\88603cb2913a7df3fbd16b5f958e6447_84f733b4-eea8-4063-a7fc-81d3a2fcb37c

Filesize
51B

MD5
5fc2ac2a310f49c14d195230b91a8885

SHA1
90855cc11136ba31758fe33b5cf9571f9a104879

SHA256
374e0e2897a7a82e0e44794cad89df0f3cdd7703886239c1fe06d625efd48092

SHA512
ab46554df9174b9fe9beba50a640f67534c3812f64d96a1fb8adfdc136dfe730ca2370825cd45b7f87a544d6a58dd868cb5a3a7f42e2789f6d679dbc0fdd52c3

Download Submit
\Users\Admin\AppData\Local\Temp\bassmod.dll

Filesize
9KB

MD5
780d14604d49e3c634200c523def8351

SHA1
e208ef6f421d2260070a9222f1f918f1de0a8eeb

SHA256
844eb66a10b848d3a71a8c63c35f0a01550a46d2ff8503e2ca8947978b03b4d2

SHA512
a49c030f11da8f0cdc4205c86bec00653ec2f8899983cad9d7195fd23255439291aaec5a7e128e1a103efd93b8566e86f15af89eba4efebf9debce14a7a5564b

Download Submit
memory/2188-15-0x0000000010000000-0x0000000010119000-memory.dmp

Filesize
1.1MB

Download
memory/2188-13-0x0000000002770000-0x00000000027A1000-memory.dmp

Filesize
196KB

Download
memory/2188-6-0x0000000002770000-0x00000000027A1000-memory.dmp

Filesize
196KB

Download
memory/2188-7-0x0000000002770000-0x00000000027A1000-memory.dmp

Filesize
196KB

Download
memory/2192-30-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2192-17-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2192-72-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2192-27-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2192-29-0x00000000001C0000-0x00000000001F1000-memory.dmp

Filesize
196KB

Download
memory/2192-28-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2408-19-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2408-25-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2408-21-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2408-22-0x0000000000425000-0x0000000000426000-memory.dmp

Filesize
4KB

Download
memory/2408-23-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2408-70-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2408-11-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2504-77-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2504-87-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2504-78-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2504-75-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2504-79-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2636-42-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2636-43-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2636-91-0x0000000000240000-0x0000000000271000-memory.dmp

Filesize
196KB

Download
memory/2636-40-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2636-90-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2636-38-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2636-67-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2636-54-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2684-68-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2684-57-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2684-53-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2684-49-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2684-47-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2684-83-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2684-64-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2684-69-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2684-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download