6e764b0d56142bcf25f95b0cfb4d87499b14ae3bb4b7276a77848264ce1950b3

Analysis

max time kernel
138s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-08-2024 21:56

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General

Target

acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
Size

20KB
MD5

acbd0fd600bd1b675dc96d99f983aed2
SHA1

0b96d9d9fcb383c81658bbf2e8ddeb2b871d437e
SHA256

6e764b0d56142bcf25f95b0cfb4d87499b14ae3bb4b7276a77848264ce1950b3
SHA512

377403e5feecc257f5eb5860c6a7e24253a219a5f7333cf5c0b72edf4c19c37a559d2303de8e3fc85ef6780fc46a417f67f3619c47846888f51b1bcd15b23585
SSDEEP

384:hrLlvtAwpAjhj8Rw1FjewNYmmNPzHuBT+Siet/0wzW89z/W6FWmp:llSj7F6+pyuF+SVcsW4

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3260	csrss.exe
5100	csrss.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4588-0-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/files/0x0007000000023486-7.dat	upx
behavioral2/memory/5100-19-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/memory/3260-21-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/memory/4588-23-0x0000000000400000-0x0000000000412000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\com\csrss.exe	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
File opened for modification	\??\c:\windows\SysWOW64\com\csrss.exe	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	\??\c:\program files\common files\system\ntserv.exe	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
File opened for modification	\??\c:\program files\common files\system\ntserv.exe	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrss.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4588	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
4588	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
4588	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
4588	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
3260	csrss.exe
3260	csrss.exe
3260	csrss.exe
3260	csrss.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4588	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
3260	csrss.exe
5100	csrss.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 3260	4588	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe	85
PID 4588 wrote to memory of 3260	4588	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe	85
PID 4588 wrote to memory of 3260	4588	acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe	85
PID 3260 wrote to memory of 5100	3260	csrss.exe	86
PID 3260 wrote to memory of 5100	3260	csrss.exe	86
PID 3260 wrote to memory of 5100	3260	csrss.exe	86

C:\Users\Admin\AppData\Local\Temp\acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\acbd0fd600bd1b675dc96d99f983aed2_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4588
- \??\c:\windows\SysWOW64\com\csrss.exe
  c:\windows\system32\com\csrss.exe c:\users\admin\appdata\local\temp\acbd0fd600bd1b675dc96d99f983aed2_jaffacakes118.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3260
- - \??\c:\windows\SysWOW64\com\csrss.exe
    c:\windows\system32\com\csrss.exe c:\windows\syswow64\com\csrss.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:5100

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\Com\csrss.exe

Filesize
20KB

MD5
acbd0fd600bd1b675dc96d99f983aed2

SHA1
0b96d9d9fcb383c81658bbf2e8ddeb2b871d437e

SHA256
6e764b0d56142bcf25f95b0cfb4d87499b14ae3bb4b7276a77848264ce1950b3

SHA512
377403e5feecc257f5eb5860c6a7e24253a219a5f7333cf5c0b72edf4c19c37a559d2303de8e3fc85ef6780fc46a417f67f3619c47846888f51b1bcd15b23585

Download Submit
memory/3260-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4588-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4588-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/5100-19-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download