9b1015c942360985925900f197f64a0310aed874ed3290b78f29da567b8ee707

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
04/07/2024, 21:19

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General

Target

263f946192e5fab0f8987b2078893539_JaffaCakes118.exe
Size

137KB
MD5

263f946192e5fab0f8987b2078893539
SHA1

d29413317cb4d69df4143f9bd57fb3e8a85381df
SHA256

9b1015c942360985925900f197f64a0310aed874ed3290b78f29da567b8ee707
SHA512

5f96bc5477d56263692c5848193e2f9dc14bcee75db352b117bd518d0dd315db3da33366cbd3809d134e645cfcfcde09cd0859ff88737e81cffb9e6be4debdcb
SSDEEP

3072:iYuwM0iyK1koxKcPjLEBOo+DT8wu35V2wmG0IOUrzluEEHSgw:i/70eZE40wupVrdrAEBg

Score

7^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2744	Nkozoa.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1752-0-0x0000000000400000-0x000000000043B000-memory.dmp	upx
behavioral1/memory/2744-10-0x0000000000400000-0x000000000043B000-memory.dmp	upx
behavioral1/files/0x0007000000016d16-8.dat	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\C2MJB7NYRU = "C:\\Windows\\Nkozoa.exe"	Nkozoa.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	263f946192e5fab0f8987b2078893539_JaffaCakes118.exe
File opened for modification	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	263f946192e5fab0f8987b2078893539_JaffaCakes118.exe
File created	C:\Windows\Nkozoa.exe	263f946192e5fab0f8987b2078893539_JaffaCakes118.exe
File opened for modification	C:\Windows\Nkozoa.exe	263f946192e5fab0f8987b2078893539_JaffaCakes118.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\Main	Nkozoa.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\International	Nkozoa.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe
2744	Nkozoa.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2744	1752	263f946192e5fab0f8987b2078893539_JaffaCakes118.exe	28
PID 1752 wrote to memory of 2744	1752	263f946192e5fab0f8987b2078893539_JaffaCakes118.exe	28
PID 1752 wrote to memory of 2744	1752	263f946192e5fab0f8987b2078893539_JaffaCakes118.exe	28
PID 1752 wrote to memory of 2744	1752	263f946192e5fab0f8987b2078893539_JaffaCakes118.exe	28

C:\Users\Admin\AppData\Local\Temp\263f946192e5fab0f8987b2078893539_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\263f946192e5fab0f8987b2078893539_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\Nkozoa.exe
  C:\Windows\Nkozoa.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Nkozoa.exe

Filesize
137KB

MD5
263f946192e5fab0f8987b2078893539

SHA1
d29413317cb4d69df4143f9bd57fb3e8a85381df

SHA256
9b1015c942360985925900f197f64a0310aed874ed3290b78f29da567b8ee707

SHA512
5f96bc5477d56263692c5848193e2f9dc14bcee75db352b117bd518d0dd315db3da33366cbd3809d134e645cfcfcde09cd0859ff88737e81cffb9e6be4debdcb

Download Submit
C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job

Filesize
372B

MD5
4e2e108a0555c190604b6961c66f7d1d

SHA1
0ae2d9e59a2b3ac98141940319dabffdf78501fc

SHA256
89158151a7e3ef967315d2996cf817ed4472d97a75be33b50abf99b1d4597d23

SHA512
28bc60ebdd3568869362804edbb8d921303b895d67cfd698064aae3ad05a09c87e17110051374f90c1694f63ec55b15654d7f5cdf74383526fc90ab947799145

Download Submit
memory/1752-42117-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1752-0-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1752-9-0x0000000001D60000-0x0000000001D9B000-memory.dmp

Filesize
236KB

Download
memory/1752-2-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1752-63031-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1752-1-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/2744-63030-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-10-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-11-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-63032-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-63033-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-63034-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-63035-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-63036-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-63037-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2744-63041-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download