cycbot | b2784d05124ccf35a408684642ec1858c0d2413bf5816b1b8911b0ba4786b438

General

Target

cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe
Size

169KB
MD5

cf76e463c11145abb6745ddf36a89904
SHA1

3a8772fdb95c7c14d6ca6d0bf9863ac4662e9d93
SHA256

b2784d05124ccf35a408684642ec1858c0d2413bf5816b1b8911b0ba4786b438
SHA512

1470f26f3ee6e0de77b1772400d1cb162fd80900e9c931688c7d2d8efdf62e7f604e49507eff993d83c31a3d105e8592d22fd2fe2b61bd92299bf8f62f556702
SSDEEP

3072:86pVsJhQrNypeCNpjDOo0kfqDOWTKji/AlNGsMQSNGOBgxvBLkq/WTi:8odNG/YkfqRe6AlgsMLyvBLk

Score

10^/10

cycbot backdoor discovery persistence rat spyware stealer 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/2756-7-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2188-18-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2188-75-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2232-78-0x0000000000400000-0x000000000046A000-memory.dmp	family_cycbot
behavioral1/memory/2188-186-0x0000000000400000-0x000000000046A000-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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2188-2-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2756-7-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2188-18-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2188-75-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2232-77-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2232-78-0x0000000000400000-0x000000000046A000-memory.dmp	upx
behavioral1/memory/2188-186-0x0000000000400000-0x000000000046A000-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	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2756	2188	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe	30
PID 2188 wrote to memory of 2756	2188	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe	30
PID 2188 wrote to memory of 2756	2188	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe	30
PID 2188 wrote to memory of 2756	2188	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe	30
PID 2188 wrote to memory of 2232	2188	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe	32
PID 2188 wrote to memory of 2232	2188	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe	32
PID 2188 wrote to memory of 2232	2188	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe	32
PID 2188 wrote to memory of 2232	2188	cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Users\Admin\AppData\Local\Temp\cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Users\Admin\AppData\Local\Temp\cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\cf76e463c11145abb6745ddf36a89904_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2232

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\6CE5.220

Filesize
597B

MD5
2707cec4ae9bd06060834d7f67e57ab1

SHA1
fc3a3dee7eb21bb03b11bc5f36bfb115819a51ba

SHA256
7a5d67e1047a7de4a724ac626ec7cc545f27ae545f6d6ba2e420987ab2c491c3

SHA512
f1b47005a84dcd33e4f198e538f5ec8f5bc0cad8a25318a9e880b02e757d7b51d0ccd0791f4d934d69f069f0237f56567a10254dd73c81e848005cd81aa242df

Download Submit
C:\Users\Admin\AppData\Roaming\6CE5.220

Filesize
1KB

MD5
48c250e10b2b026a0f82caf72ed93917

SHA1
7c39bdd31a22b77bf4170e9678a68bfbc09d07be

SHA256
fdfe2e7d9fec99b9a5e33df5b17597299cf2b029d3deab4fcecd5b669cec35c6

SHA512
0df41c8dcf7486583634b1c164e370fd91271b8f05e5f5c6f633badae118b1286bbc2f4a9205910e420d581f2aef065fa3ffcfb1fe5832ead215b1856e81c782

Download Submit
C:\Users\Admin\AppData\Roaming\6CE5.220

Filesize
1KB

MD5
774c4f6662b8f06de15bcc721e23a315

SHA1
a29355d35d3fcc628ff0261fb922f8b8bc2138d7

SHA256
5e318f927992a257f78abb32946457cd06952713154707c62ab7205252fa0c65

SHA512
b1a76d9e4a6f54343052957201cfc1ffa98072d1d45b62041f97675da69e94f336720d958a7a7a3bacab3515313a9abd89709854226a58edc091d6bc3407f356

Download Submit
C:\Users\Admin\AppData\Roaming\6CE5.220

Filesize
897B

MD5
0d2fd8152536e7dda8183e6f302edc73

SHA1
3eb3b3f9f97aff67c8dd3c33f3264d4b35f5e959

SHA256
ab2de13cdd62f1d6e966723a9b9ea10b3ce139a963599edd6ad4a2ad2b394a03

SHA512
c079433cf12bdf4ef35bd9b2f49ad6d0f3aeb09c83431e053b0a1229b65830d1244123dfb9257cc2c982bb4a05778953b28049ff45a55587c83c90350f7270ac

Download Submit
C:\Users\Admin\AppData\Roaming\6CE5.220

Filesize
1KB

MD5
e83738b16d8c8a46267780d4d9180e77

SHA1
312b20b094d31b9b21fa5036e3a52e08cea5729e

SHA256
2669b325d564298f433c13cc8e9e9834c1a9b05135ce5ddee81cb3d25094f1ab

SHA512
4461683d3e51293e5ecb5863efb08c28599fbfb3f3c4abd0b3aa537e9de4238908642b34531277ed9b50ed6bf2a402e83740447cab1c3786ef38155c7b8dda9e

Download Submit
memory/2188-18-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2188-75-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2188-1-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2188-2-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2188-186-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2232-77-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2232-78-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2756-7-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads