cycbot | cd705b00962c246a2513eebce6e3c6b50aed5b3576569006d362a3f16e5b10ea

General

Target

JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
Size

165KB
MD5

4050f3601ab7931a0f6db2262ecb25a9
SHA1

aea77ad2a71dea57b06d824ab8617149e2d1edcc
SHA256

cd705b00962c246a2513eebce6e3c6b50aed5b3576569006d362a3f16e5b10ea
SHA512

1d1ce6495680eb604873297f515f163e9c9145451552158bd897968eab3094e3b8b8ea46e974a15b28b11e9f82a7f64f8569d2c0720d00f30f5a69e140fe2507
SSDEEP

3072:hMMbRiYder+FnuJ2PaCZwXPlbPXHVO2oBvQ6xNDCnz1dShLeA184Uum9xVp:hzb0Yd+3Ehih1PoBI6HDw11A184UTxV

Score

10^/10

cycbot backdoor discovery persistence rat upx

Malware Config

Signatures

Cycbot
Cycbot is a backdoor and trojan written in C++..
backdoor rat cycbot
Cycbot family
cycbot

Detects Cycbot payload 7 IoCs

Cycbot is a backdoor and trojan written in C++.

resource	yara_rule
behavioral2/memory/1644-19-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4468-21-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4468-22-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2224-121-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/2224-124-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4468-125-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4468-307-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\99E4D\\97B0B.exe"	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4468-4-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1644-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1644-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1644-19-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4468-21-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4468-22-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2224-121-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/2224-124-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4468-125-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4468-307-0x0000000000400000-0x0000000000491000-memory.dmp	upx

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	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4468 wrote to memory of 1644	4468	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	85
PID 4468 wrote to memory of 1644	4468	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	85
PID 4468 wrote to memory of 1644	4468	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	85
PID 4468 wrote to memory of 2224	4468	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	87
PID 4468 wrote to memory of 2224	4468	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	87
PID 4468 wrote to memory of 2224	4468	JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4468
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe startC:\Program Files (x86)\LP\0B09\619.exe%C:\Program Files (x86)\LP\0B09
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1644
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4050f3601ab7931a0f6db2262ecb25a9.exe startC:\Program Files (x86)\4DB0B\lvvm.exe%C:\Program Files (x86)\4DB0B
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\99E4D\DB0B.9E4

Filesize
996B

MD5
2674d1714a952a910bdcda1a3aec0e8b

SHA1
6d2f7b01aaf72b65cbd81e70bf09c2e65ee88af3

SHA256
ecb54c8b06958c9134d35fd89b82f112bd1bc5a1683c267cc296877da7f6afe9

SHA512
669751e93700740bfb14f6686f02521196e68c1677df2e659fda8b2f1c0bab843509a6ed533c93ec666d5e99ab01726086907d4156865db4fc408bc70a6eb868

Download Submit
C:\Users\Admin\AppData\Roaming\99E4D\DB0B.9E4

Filesize
600B

MD5
129bcfedcb2c684691f97574d0544335

SHA1
bc93427ae5f85b4b5f75cd617ccc427a9db64abe

SHA256
e5046c029873478748a69efcfef06e4a391c66a3206717c4911780028d93a304

SHA512
039079080463846fcb08f1681e9c527c0e338d6d312dfa0b907ce40414802c855bedbd657f8e6e1f3174a3e5a3d3aeece81eb535496c7c75e317296480499186

Download Submit
C:\Users\Admin\AppData\Roaming\99E4D\DB0B.9E4

Filesize
1KB

MD5
f294e79f1544ac1efaa68fe00cbbecb4

SHA1
5fc41f4a7835321399da90075f51378a35b2e478

SHA256
9414793d74da7d4a2951f0691ea7a29dd398102c97672121f6dee03e6fedacf4

SHA512
ad89c744e2d9112fb7aa649de6697bdc072d8b1706755e6773de2b06620266eaa910ce7072c65e1fa8f3b09ae1a8b09439e80a8bd7fecaa28d83e89432696e74

Download Submit
memory/1644-19-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1644-14-0x0000000075490000-0x00000000754C9000-memory.dmp

Filesize
228KB

Download
memory/1644-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1644-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1644-20-0x0000000075490000-0x00000000754C9000-memory.dmp

Filesize
228KB

Download
memory/2224-123-0x0000000075490000-0x00000000754C9000-memory.dmp

Filesize
228KB

Download
memory/2224-119-0x0000000075490000-0x00000000754C9000-memory.dmp

Filesize
228KB

Download
memory/2224-121-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2224-124-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4468-21-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4468-22-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4468-4-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4468-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4468-125-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4468-3-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4468-1-0x0000000075490000-0x00000000754C9000-memory.dmp

Filesize
228KB

Download
memory/4468-307-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4468-308-0x0000000075490000-0x00000000754C9000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads