20a9d6e9c6452db4bca47c3aa48bf2abd5ad0a01141e47be4e4ec0fd4c9b7597

General

Target

38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe
Size

85KB
MD5

38d50b3ef5a0403986c3bdbebdd94207
SHA1

92a17658e6b0b5b0d035533258797413e8b84f5c
SHA256

20a9d6e9c6452db4bca47c3aa48bf2abd5ad0a01141e47be4e4ec0fd4c9b7597
SHA512

9b605f689369c25d78652ad50bdde21836f714318d77bf7f5d8f4d80302ad7f6f4c56753285ed29514abea4c829312d45fea9025318e707c56890f48353563d8
SSDEEP

1536:GyapL5ZVzu+ApVBxYhQfp5XmQwg/sdT46:BaLZVzu+ArPfp5XmPgEB

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2948	arq1.exe
2840	arq2.exe

Loads dropped DLL 4 IoCs

pid	Process
2496	cmd.exe
2496	cmd.exe
2916	cmd.exe
2916	cmd.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000012117-5.dat	upx
behavioral1/memory/2948-6-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2948-24-0x0000000000400000-0x0000000000409000-memory.dmp	upx

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dxdgns.dll	arq2.exe
File opened for modification	C:\Windows\SysWOW64\dxdgns.dll	arq2.exe
File opened for modification	C:\Windows\SysWOW64\msvejl.com	arq2.exe
File created	C:\Windows\SysWOW64\msvejl.com	arq2.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\msagent\msnsuw.com	arq2.exe
File opened for modification	C:\Windows\msagent\msnsuw.com	arq2.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2660163958-4080398480-1122754539-1000\Software\Microsoft\Internet Explorer\Main\Check_Associations = "No"	arq2.exe
Key created	\REGISTRY\USER\S-1-5-21-2660163958-4080398480-1122754539-1000\Software\Microsoft\Internet Explorer\Main	arq2.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2840	arq2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2840	arq2.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2496	2072	38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe	31
PID 2072 wrote to memory of 2496	2072	38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe	31
PID 2072 wrote to memory of 2496	2072	38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe	31
PID 2072 wrote to memory of 2496	2072	38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe	31
PID 2496 wrote to memory of 2948	2496	cmd.exe	32
PID 2496 wrote to memory of 2948	2496	cmd.exe	32
PID 2496 wrote to memory of 2948	2496	cmd.exe	32
PID 2496 wrote to memory of 2948	2496	cmd.exe	32
PID 2072 wrote to memory of 2916	2072	38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe	33
PID 2072 wrote to memory of 2916	2072	38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe	33
PID 2072 wrote to memory of 2916	2072	38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe	33
PID 2072 wrote to memory of 2916	2072	38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe	33
PID 2916 wrote to memory of 2840	2916	cmd.exe	35
PID 2916 wrote to memory of 2840	2916	cmd.exe	35
PID 2916 wrote to memory of 2840	2916	cmd.exe	35
PID 2916 wrote to memory of 2840	2916	cmd.exe	35
PID 2840 wrote to memory of 2852	2840	arq2.exe	36
PID 2840 wrote to memory of 2852	2840	arq2.exe	36
PID 2840 wrote to memory of 2852	2840	arq2.exe	36
PID 2840 wrote to memory of 2852	2840	arq2.exe	36
PID 2840 wrote to memory of 1184	2840	arq2.exe	21
PID 2840 wrote to memory of 2724	2840	arq2.exe	37
PID 2840 wrote to memory of 2724	2840	arq2.exe	37
PID 2840 wrote to memory of 2724	2840	arq2.exe	37
PID 2840 wrote to memory of 2724	2840	arq2.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1184
- C:\Users\Admin\AppData\Local\Temp\38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\38d50b3ef5a0403986c3bdbebdd94207_JaffaCakes118.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2072
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c start arq1.exe
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2496
  - - C:\Users\Admin\AppData\Local\Temp\arq1.exe
      arq1.exe
      4⤵
      Executes dropped EXE
      PID:2948
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c start arq2.exe
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2916
  - - C:\Users\Admin\AppData\Local\Temp\arq2.exe
      arq2.exe
      4⤵
      Executes dropped EXE
      Drops file in System32 directory
      Drops file in Windows directory
      Modifies Internet Explorer settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2840
    - - C:\Windows\SysWOW64\EXPLORER.EXE
        
        EXPLORER.EXE
        5⤵
        
        PID:2852
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c del "C:\Users\Admin\AppData\Local\Temp\arq2.exe"
        5⤵
        
        PID:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\arq1.exe

Filesize
15KB

MD5
d086545408c8a9fe705ac367d6f2e551

SHA1
4e9df7d7cd71679937f0b186d6495db8964eacab

SHA256
878843d0d31967fe610a127e1a3e131d699aae23babc3caac2ed202b129d78cd

SHA512
164a2988c067afedccc7c35829894d0b3672023a230a4ffae8ec80891c054aa09f3f629de12b17b204f6f4a24366d4eb3f560052c29016f8cc2577e90bebb8ca

Download Submit
\Users\Admin\AppData\Local\Temp\arq2.exe

Filesize
51KB

MD5
b101a6b64d8f1341a3c88b8d746a5998

SHA1
9121c811e4ccded2420d7b15e3e3efeef365cee3

SHA256
453e9d696d04834c07d2639b7689b8bece4d41cfef91bcbd146eb4939cf62f38

SHA512
db71f23191e51918725c416187c051264a429e4df855936a1f4785f247e039ddab3b7360dfc4852a999f3346cbf30bfe376cedb3eb6584c0e54d26d62aa8a3aa

Download Submit
memory/1184-22-0x0000000003E70000-0x0000000003E71000-memory.dmp

Filesize
4KB

Download
memory/2072-10-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2840-23-0x0000000013140000-0x0000000013175000-memory.dmp

Filesize
212KB

Download
memory/2948-6-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2948-24-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

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