ff62f55b29ba84072f70d666727f91aba9582f84372b20892914c48392a11237

General

Target

f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe
Size

61KB
MD5

f5cf99ffeb0c5cb2a6bc8b187159f6be
SHA1

93637b0044fb7af91cc34093f4a007c77088a00c
SHA256

ff62f55b29ba84072f70d666727f91aba9582f84372b20892914c48392a11237
SHA512

695ee7ce580f31b5e5d75d0ad1ce525cfb3ae429349be390466538b8b6429ff2a1aa851cb72c54f130647fa2e13788748307cd3a126b18c171faae86ec85b5b3
SSDEEP

1536:9U8vATX1zi9OK690/Vi/bWQEMRNiGexsn7nHh:97gFi930/bWQPRSaHh

Score

8^/10

persistence upx

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Deletes itself 1 IoCs

pid	Process
2920	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	eskislk.exe

Loads dropped DLL 2 IoCs

pid	Process
1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe
1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1048-3-0x0000000000400000-0x000000000041F400-memory.dmp	upx
behavioral1/memory/1048-1-0x0000000000400000-0x000000000041F400-memory.dmp	upx
behavioral1/memory/1048-0-0x0000000000400000-0x000000000041F400-memory.dmp	upx
behavioral1/memory/1048-4-0x0000000000400000-0x000000000041F400-memory.dmp	upx
behavioral1/memory/1048-6-0x0000000000400000-0x000000000041F400-memory.dmp	upx
behavioral1/files/0x000c000000016c0e-8.dat	upx
behavioral1/memory/1048-9-0x00000000002C0000-0x00000000002E0000-memory.dmp	upx
behavioral1/memory/1048-21-0x0000000000400000-0x000000000041F400-memory.dmp	upx
behavioral1/memory/2916-22-0x0000000000400000-0x000000000041F400-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\eskisl.dll	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\eskislk.exe	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\eskislk.exe	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 2916	1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe	28
PID 1048 wrote to memory of 2916	1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe	28
PID 1048 wrote to memory of 2916	1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe	28
PID 1048 wrote to memory of 2916	1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe	28
PID 1048 wrote to memory of 2920	1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe	31
PID 1048 wrote to memory of 2920	1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe	31
PID 1048 wrote to memory of 2920	1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe	31
PID 1048 wrote to memory of 2920	1048	f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\SysWOW64\eskislk.exe
  C:\Windows\system32\eskislk.exe ˜‰
  2⤵
  - Executes dropped EXE
  PID:2916
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe.bat
  2⤵
  - Deletes itself
  PID:2920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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\f5cf99ffeb0c5cb2a6bc8b187159f6be_JaffaCakes118.exe.bat

Filesize
210B

MD5
98b7f595a7a53a03ba8517fe93a6140d

SHA1
2290d90a220238813903d63b310061cfbd08cbb1

SHA256
c3652f6168597584f5c68078ae569b052b4ecc71e4019ee2f505a2c865d0f12f

SHA512
4d14ff6563058e82cd79a582726e13b33a52718d7414d1051072b7a09973ef061f02f6c5112630124d82834e181592ea1a35ec7105e7284e755e9a27ff238b71

Download Submit
\Windows\SysWOW64\eskislk.exe

Filesize
61KB

MD5
f5cf99ffeb0c5cb2a6bc8b187159f6be

SHA1
93637b0044fb7af91cc34093f4a007c77088a00c

SHA256
ff62f55b29ba84072f70d666727f91aba9582f84372b20892914c48392a11237

SHA512
695ee7ce580f31b5e5d75d0ad1ce525cfb3ae429349be390466538b8b6429ff2a1aa851cb72c54f130647fa2e13788748307cd3a126b18c171faae86ec85b5b3

Download Submit
memory/1048-3-0x0000000000400000-0x000000000041F400-memory.dmp

Filesize
125KB

Download
memory/1048-1-0x0000000000400000-0x000000000041F400-memory.dmp

Filesize
125KB

Download
memory/1048-0-0x0000000000400000-0x000000000041F400-memory.dmp

Filesize
125KB

Download
memory/1048-4-0x0000000000400000-0x000000000041F400-memory.dmp

Filesize
125KB

Download
memory/1048-6-0x0000000000400000-0x000000000041F400-memory.dmp

Filesize
125KB

Download
memory/1048-9-0x00000000002C0000-0x00000000002E0000-memory.dmp

Filesize
128KB

Download
memory/1048-16-0x00000000002C0000-0x00000000002E0000-memory.dmp

Filesize
128KB

Download
memory/1048-21-0x0000000000400000-0x000000000041F400-memory.dmp

Filesize
125KB

Download
memory/1048-23-0x00000000002C0000-0x00000000002E0000-memory.dmp

Filesize
128KB

Download
memory/2916-22-0x0000000000400000-0x000000000041F400-memory.dmp

Filesize
125KB

Download

Analysis

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