cycbot | 319edcd705e76c1ae09e9ef383a964a042c71d6cd859f6181ab7b16d678e4afe

General

Target

e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe
Size

176KB
MD5

e3f540d2c1bec03f3dacc75d0057b942
SHA1

ce65f2ba83a7d9d997566c60ff0f43fe8565d348
SHA256

319edcd705e76c1ae09e9ef383a964a042c71d6cd859f6181ab7b16d678e4afe
SHA512

b7c81f66d52be1a28049d8f7220453611cee326f6ccbf458b37aa0f1ca4f7b36fc4303d381aeb62ddb0623f0b45f6b779a4dc6b7380f843d1cb98a086d190baa
SSDEEP

3072:/CsNAKJx/U5Z5X81JAhMcQM3+2Kl9Vd/PwmJ35I7EFEes5iPMARCksh2c6JNB5oS:/DAQG5GJgMcvgl/Pwc36OpXR+hF6z7bX

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 6 IoCs

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

resource	yara_rule
behavioral2/memory/1132-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4592-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4592-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4692-124-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4592-125-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4592-295-0x0000000000400000-0x0000000000491000-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\\9044E\\9E42C.exe"	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4592-2-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1132-13-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/1132-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4592-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4592-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4692-122-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4692-124-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4592-125-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4592-295-0x0000000000400000-0x0000000000491000-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	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 1132	4592	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe	86
PID 4592 wrote to memory of 1132	4592	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe	86
PID 4592 wrote to memory of 1132	4592	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe	86
PID 4592 wrote to memory of 4692	4592	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe	91
PID 4592 wrote to memory of 4692	4592	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe	91
PID 4592 wrote to memory of 4692	4592	e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4592
- C:\Users\Admin\AppData\Local\Temp\e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe startC:\Program Files (x86)\LP\2CC9\F46.exe%C:\Program Files (x86)\LP\2CC9
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1132
- C:\Users\Admin\AppData\Local\Temp\e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\e3f540d2c1bec03f3dacc75d0057b942_JaffaCakes118.exe startC:\Program Files (x86)\4ED42\lvvm.exe%C:\Program Files (x86)\4ED42
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4692

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\9044E\ED42.044

Filesize
996B

MD5
c6b91ea31f1a3f1be71b859e798496fa

SHA1
dc47d00a74c42df3fd3a9d46dc031840a18c2868

SHA256
451b0fa5aadf05fd9036135ea87246de78854e77beab612493c176b68f1a5953

SHA512
4fcef55def2e8d5b9aa36e691f29d62c636ca4acb6e3528863b3db86af59fb88362aeb037e6ad63f0bc49629620d2ee9829f52e008c9b2cde458493d9eef6775

Download Submit
C:\Users\Admin\AppData\Roaming\9044E\ED42.044

Filesize
600B

MD5
bab44cc8957741bf730563becfd87255

SHA1
3912e214e832a9e836091da409ccc8e50eed0056

SHA256
82acaa59832580d8cf0ac8f14a1580c1cc1ed39178c3cc1e73dcd87c4c3ae1dd

SHA512
d8db7e89001d24cfc45c593f4a875ac2cefb45368dedfba19deb75f26f6c084e0a411436e6da48d36adcc8bfa63b42799c549c925d85dcc13fb97697f972fb50

Download Submit
C:\Users\Admin\AppData\Roaming\9044E\ED42.044

Filesize
1KB

MD5
bad2334421b5ba0d7184a1e0cb040fed

SHA1
2783022686f279a26f2bc73254ca3085cf9ce4a7

SHA256
e81213add1974385e55757ef34d527f52aa43b00cc18cc0b4617967d98a7d77b

SHA512
78fac306890fced1dd96e8a389953f070535829b9fd821927102fb82f614a4d1bf14b2c6267ea59daaa5a4cbe8c97fe30e753be5038cebb723726f1c9ef845c7

Download Submit
memory/1132-13-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1132-12-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/1132-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4592-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4592-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4592-125-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4592-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4592-2-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4592-295-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4692-122-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4692-124-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads