cycbot | 4a48287a6119abd0bc3cd681a10a1a59caae84a07d41741b1b40540310472754

General

Target

JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe
Size

172KB
MD5

69436a95d9e12c6c5b67c51bce071539
SHA1

ae183cad978d41b2423c8a66ca95895295d7d837
SHA256

4a48287a6119abd0bc3cd681a10a1a59caae84a07d41741b1b40540310472754
SHA512

d13caf3011695efa075763e842ff004649c3c151dd888385630bd2448c730a7dc3ffb97c6a32ae8b13a773f2eec52bd91be212dbaf136baaae2db39408c77134
SSDEEP

3072:O5j5iPxhLT3lemGR8HtQ5Av6yEBVQi547aZfnvtTH6oXSXJzhUdWRC9BXGQXeLni:O7iPxhLT1HGee7VQi5VvVzohhUdwC9xd

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/1732-14-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/4080-15-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4080-16-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/3896-123-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/4080-124-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral2/memory/4080-270-0x0000000000400000-0x0000000000490000-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-1-5-21-4174397412-4125106315-2776226590-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\9B929\\9827C.exe"	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4080-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1732-13-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1732-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/1732-14-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4080-15-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4080-16-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3896-122-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/3896-123-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4080-124-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral2/memory/4080-270-0x0000000000400000-0x0000000000490000-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_69436a95d9e12c6c5b67c51bce071539.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4080 wrote to memory of 1732	4080	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe	85
PID 4080 wrote to memory of 1732	4080	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe	85
PID 4080 wrote to memory of 1732	4080	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe	85
PID 4080 wrote to memory of 3896	4080	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe	86
PID 4080 wrote to memory of 3896	4080	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe	86
PID 4080 wrote to memory of 3896	4080	JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4080
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe startC:\Program Files (x86)\LP\7CF9\5DB.exe%C:\Program Files (x86)\LP\7CF9
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1732
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_69436a95d9e12c6c5b67c51bce071539.exe startC:\Program Files (x86)\293B6\lvvm.exe%C:\Program Files (x86)\293B6
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3896

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\9B929\93B6.B92

Filesize
996B

MD5
6553baf6a835d2d340381071d830802f

SHA1
acfdbd19b0b9328f6a2a969fdc042bc7390ebfd2

SHA256
10115f186d74999cd37b23d4b4e2d5224af1a3b0a35a5c43d3ef78557b1c0e86

SHA512
6174864d1a020ec977ddf8affd57f416d71b60d9c43edf079c46ba9982c9f2a4145ab20f3a5d7a7b509e30ff12f736dc4e22b2bf841bc23701e14e129cbdf130

Download Submit
C:\Users\Admin\AppData\Roaming\9B929\93B6.B92

Filesize
600B

MD5
20da21bfb35b36a97a8f3e21c4f89a33

SHA1
9401c11a676d36c5e03c459b7ab4b6c2e22b187f

SHA256
3e59ba9b918674cb68467454afe4456c5db88513c3eea18d32b3d3e694ed0633

SHA512
448e6e458fa044d93ca21d423358dc129c91485ebfd844ff142edaff1960f33a24bd45734cfb7049edc7b869aecd857fc561bb4b717053e20e01e5bb5ce453fd

Download Submit
C:\Users\Admin\AppData\Roaming\9B929\93B6.B92

Filesize
1KB

MD5
116425262b335ac384061c6cf737424b

SHA1
bc720fb4a1c70527eb76bc3746ee65c6d5072f8d

SHA256
c11f0ff8d9aadcaeb318928c68629ca2e677ed0faa93ee2418273a6f565f2c8b

SHA512
6b4e4bd4477e2f55c35c45ad6cb839b8ce762e787cb6d1f0ba674cf9699eeb18917a5f2d7accda667d488ca2279fe52258228b3e5260e48c55aceb507bc4ba59

Download Submit
memory/1732-13-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1732-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1732-14-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3896-122-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3896-121-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3896-123-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4080-16-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4080-1-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4080-124-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4080-15-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4080-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/4080-270-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads