isrstealer | dc7f36e303ad160f0f4c6f2af9fab5837571998f9f4fc7817ca05fe717493c59

Analysis

max time kernel
140s
max time network
118s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26-06-2024 13:22

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General

Target

121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe
Size

844KB
MD5

121d0b20a7ea0aff94c9951ab2a22c71
SHA1

d7794361d73ea95d5748a9d60b9acbb479b8762e
SHA256

dc7f36e303ad160f0f4c6f2af9fab5837571998f9f4fc7817ca05fe717493c59
SHA512

103ce92ece47d2b7b9f5eb0d28c13017c4e02982067e4a3458af1f5e7b593ea2cf5d4f9b5755eab5d4cad3eb0ed1ca41b59b263014192a979b006d7bb1c4bc13
SSDEEP

12288:djTwOslBgVCkoSCTyyZ27HjUtbnW3h0pKN3fl1aLUK40nnVanE4syALPwWbyFYMM:ZTwOsI04CyyaUtbMEKtS4K40VwxjoRk

Score

10^/10

isrstealer bootkit persistence 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 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2484-31-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2484-28-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2484-39-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer

Executes dropped EXE 2 IoCs

Processes:

boug.exe1CLICK DVD All Products CrackPatch v0.2_SND.exe

pid process

2988 boug.exe
2532 1CLICK DVD All Products CrackPatch v0.2_SND.exe

pid	process
2988	boug.exe
2532	1CLICK DVD All Products CrackPatch v0.2_SND.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2448-35-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2448-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2448-38-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2448-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2448-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

1CLICK DVD All Products CrackPatch v0.2_SND.exe

description ioc process

File opened for modification \??\PhysicalDrive0 1CLICK DVD All Products CrackPatch v0.2_SND.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	1CLICK DVD All Products CrackPatch v0.2_SND.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

Processes:

1CLICK DVD All Products CrackPatch v0.2_SND.exe

pid	process
2532	1CLICK DVD All Products CrackPatch v0.2_SND.exe
2532	1CLICK DVD All Products CrackPatch v0.2_SND.exe
2532	1CLICK DVD All Products CrackPatch v0.2_SND.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

boug.exevbc.exe

description pid process target process

PID 2988 set thread context of 2484 2988 boug.exe vbc.exe
PID 2484 set thread context of 2448 2484 vbc.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 2988 set thread context of 2484	2988	boug.exe	vbc.exe
PID 2484 set thread context of 2448	2484	vbc.exe	vbc.exe

Modifies registry class 3 IoCs

Processes:

1CLICK DVD All Products CrackPatch v0.2_SND.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	1CLICK DVD All Products CrackPatch v0.2_SND.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	1CLICK DVD All Products CrackPatch v0.2_SND.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	1CLICK DVD All Products CrackPatch v0.2_SND.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

2484 vbc.exe

pid	process
2484	vbc.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exeboug.exevbc.exe

description	pid	process	target process
PID 936 wrote to memory of 2988	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	boug.exe
PID 936 wrote to memory of 2988	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	boug.exe
PID 936 wrote to memory of 2988	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	boug.exe
PID 936 wrote to memory of 2988	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	boug.exe
PID 936 wrote to memory of 2532	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	1CLICK DVD All Products CrackPatch v0.2_SND.exe
PID 936 wrote to memory of 2532	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	1CLICK DVD All Products CrackPatch v0.2_SND.exe
PID 936 wrote to memory of 2532	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	1CLICK DVD All Products CrackPatch v0.2_SND.exe
PID 936 wrote to memory of 2532	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	1CLICK DVD All Products CrackPatch v0.2_SND.exe
PID 936 wrote to memory of 2532	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	1CLICK DVD All Products CrackPatch v0.2_SND.exe
PID 936 wrote to memory of 2532	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	1CLICK DVD All Products CrackPatch v0.2_SND.exe
PID 936 wrote to memory of 2532	936	121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe	1CLICK DVD All Products CrackPatch v0.2_SND.exe
PID 2988 wrote to memory of 2484	2988	boug.exe	vbc.exe
PID 2988 wrote to memory of 2484	2988	boug.exe	vbc.exe
PID 2988 wrote to memory of 2484	2988	boug.exe	vbc.exe
PID 2988 wrote to memory of 2484	2988	boug.exe	vbc.exe
PID 2988 wrote to memory of 2484	2988	boug.exe	vbc.exe
PID 2988 wrote to memory of 2484	2988	boug.exe	vbc.exe
PID 2988 wrote to memory of 2484	2988	boug.exe	vbc.exe
PID 2988 wrote to memory of 2484	2988	boug.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe
PID 2484 wrote to memory of 2448	2484	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\121d0b20a7ea0aff94c9951ab2a22c71_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:936
- C:\Users\Admin\AppData\Local\Temp\boug.exe
  "C:\Users\Admin\AppData\Local\Temp\boug.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2988
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2484
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      /scomma "C:\Users\Admin\AppData\Local\Temp\jgvOC5dmho.ini"
      4⤵
      PID:2448
- C:\Users\Admin\AppData\Local\Temp\1CLICK DVD All Products CrackPatch v0.2_SND.exe
  "C:\Users\Admin\AppData\Local\Temp\1CLICK DVD All Products CrackPatch v0.2_SND.exe"
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Modifies registry class
  PID:2532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1CLICK DVD All Products CrackPatch v0.2_SND.exe

Filesize
324KB

MD5
548ac994626cbe2cbeb20f0188011d54

SHA1
75d65deea7b108fb882265a195e39432fcfc2e87

SHA256
fdc6ce8c53f9100847deee3817d39345b29f5d8c0593900389207bb7882cac38

SHA512
ac9d3d09ef3a354179a1f98afd9a9c44de4e8d157aba01324b66d78ecae042b6832e656f4b837df9848a465655f2ac6e6abab9481ce484d3b0c6a193287997b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\boug.exe

Filesize
295KB

MD5
44fbc8292e33faad486efb13c3667f9c

SHA1
ee3af82a454b1bfe0956912eeec6b6796e23aec8

SHA256
b222a9708e4816528bd422a6f2fc2e686dd13c5cc78daddeaf62bc2cb61f9cd0

SHA512
01e1719e5cde4b8aa08870cc6e0c958f59f53ba780061f60804c78027409dd810d97d1ec3b93f9bb23d49fcf976eae2b291fe28257b84bb9e79da51c2c54032f

Download Submit
memory/936-21-0x000007FEF5E20000-0x000007FEF67BD000-memory.dmp

Filesize
9.6MB

Download
memory/936-11-0x000007FEF5E20000-0x000007FEF67BD000-memory.dmp

Filesize
9.6MB

Download
memory/936-15-0x000007FEF5E20000-0x000007FEF67BD000-memory.dmp

Filesize
9.6MB

Download
memory/936-0-0x000007FEF60DE000-0x000007FEF60DF000-memory.dmp

Filesize
4KB

Download
memory/2448-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2448-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2448-38-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2448-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2448-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2484-39-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2484-24-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2484-31-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2484-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2484-28-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2484-26-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2532-19-0x0000000001F30000-0x0000000001F31000-memory.dmp

Filesize
4KB

Download
memory/2532-47-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-18-0x0000000001DD0000-0x0000000001DD1000-memory.dmp

Filesize
4KB

Download
memory/2532-20-0x0000000001F20000-0x0000000001F21000-memory.dmp

Filesize
4KB

Download
memory/2532-22-0x0000000001F50000-0x0000000001F51000-memory.dmp

Filesize
4KB

Download
memory/2532-23-0x0000000001F40000-0x0000000001F41000-memory.dmp

Filesize
4KB

Download
memory/2532-17-0x0000000001DE0000-0x0000000001DE1000-memory.dmp

Filesize
4KB

Download
memory/2532-43-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-44-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-45-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-46-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-16-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-48-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-49-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-50-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-51-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-52-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-53-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-54-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-55-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-56-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/2532-57-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download