cycbot | 9155f7f56a7b45d91a40d3752a6754398f44a4041e5e995cc5e755c8d50ca1ba

General

Target

JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe
Size

179KB
MD5

a5e9059a2a6479c8827abdabd0a0e65a
SHA1

85dbc6e7a85f1780084ebf3cdc2824c4aff4a762
SHA256

9155f7f56a7b45d91a40d3752a6754398f44a4041e5e995cc5e755c8d50ca1ba
SHA512

35f3cab244d644c147beff7e8ba0844fe39a099b9279165866875310f9268605344a977a6be97e8ea359df7611fa0c5636ad51ab5b7fb154c60627fa5002e388
SSDEEP

3072:G96bQz7/1rTU6EH5G7Jwalp3E9F2bVQiUGo7riZiOB0jnxoYTHeunJdVj:LbK7pY15G7JwCpIMVnUpniZiOKxQufN

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 5 IoCs

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

resource	yara_rule
behavioral1/memory/3372-15-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2740-46-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/388-113-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2740-114-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/2740-186-0x0000000000400000-0x0000000000490000-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-1-5-21-814918696-1585701690-3140955116-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2740-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2740-1-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/3372-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/3372-13-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/3372-15-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2740-46-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/388-113-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2740-114-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/2740-186-0x0000000000400000-0x0000000000490000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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_a5e9059a2a6479c8827abdabd0a0e65a.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 3372	2740	JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe	88
PID 2740 wrote to memory of 3372	2740	JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe	88
PID 2740 wrote to memory of 3372	2740	JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe	88
PID 2740 wrote to memory of 388	2740	JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe	99
PID 2740 wrote to memory of 388	2740	JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe	99
PID 2740 wrote to memory of 388	2740	JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:3372
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5e9059a2a6479c8827abdabd0a0e65a.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:388

Network

MITRE ATT&CK Enterprise v16

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\4993.FF6

Filesize
996B

MD5
0ff59b794bb1acea4a83d18c12f99160

SHA1
3baaf211f72f52960d2cedb1073dc30b78044ef9

SHA256
fde1393d53f5eb6a9d24b6cd3f895380cac53727bac28549c7792f979c7f09c2

SHA512
c5e464e7fada9985863521f1546cb74da3dc169ba8574085d238da6e1ce2698f908409a6cb1d1918922b623b8d6d7716b7c50b4589a0c206b36b5162b65e4f64

Download Submit
C:\Users\Admin\AppData\Roaming\4993.FF6

Filesize
600B

MD5
3abc96743b836edeb2243210a87c0cec

SHA1
dd50e1b46377d38eef886229726037ef9ccde58b

SHA256
192b6005dfa86335ff20df24b75fa9cb77feac3de7f79e406d5ccb27708d7c06

SHA512
7c51db923aae65dce766f767bcd245691521670ed9bf7d3b76b06df746df6732cda72deeb527c576ae551b8698fe8b2be7de2e07ca8e2c55baaa62b1e17bb466

Download Submit
C:\Users\Admin\AppData\Roaming\4993.FF6

Filesize
1KB

MD5
8a4a3aceec7d44f742e91a6bc0cf1777

SHA1
8cbee97b296dbe43625265109ed56fc3a3514104

SHA256
c8ecb02caee8df21daf31deee848b374a3fc62f4be7960ecb0924f76ce7666c6

SHA512
08c3dda76147a920f0099ace107edb2cd0e7f85507a286a75b3174d66c7b3256396cd6c1a164e96fabf014438cd8df803c880454d1bccb95d0ff18431ee2006d

Download Submit
memory/388-113-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/388-111-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2740-114-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2740-46-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2740-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2740-1-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/2740-186-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3372-15-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3372-13-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/3372-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads