cycbot | 4e2aa7d3a94acef5e2a6736b6e3e184cbec99697b751041bea9a1e57c1747939

General

Target

JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe
Size

176KB
MD5

c0904ab24a5a0e48dfb08d76ca712de5
SHA1

468ad4f177dc3c32df32bb3def9b9fc66235a044
SHA256

4e2aa7d3a94acef5e2a6736b6e3e184cbec99697b751041bea9a1e57c1747939
SHA512

5c6bf0fc5480af65fc6b5e2e67b537538596d396122e8602cc925298d14452f3a385101276baf6a2c02aaf78a83c2bc04eec0d82c3d2a377cbdb8e0293721bfc
SSDEEP

3072:aQkKoPSA0Ywm1dS/x8Qkp8uHy0ZhcCMN6g0Ziw7hiKivDqVsdXHxJWRl7xFTkAiV:aQkKo6/Y5dS/xzkhy+c10Zl7O2VsdXRu

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/2036-14-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2428-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2428-82-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1968-86-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2428-203-0x0000000000400000-0x000000000046E000-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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.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 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2428-2-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2036-14-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2036-13-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2428-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2428-82-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1968-84-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1968-86-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2428-203-0x0000000000400000-0x000000000046E000-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_c0904ab24a5a0e48dfb08d76ca712de5.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 2036	2428	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe	30
PID 2428 wrote to memory of 2036	2428	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe	30
PID 2428 wrote to memory of 2036	2428	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe	30
PID 2428 wrote to memory of 2036	2428	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe	30
PID 2428 wrote to memory of 1968	2428	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe	33
PID 2428 wrote to memory of 1968	2428	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe	33
PID 2428 wrote to memory of 1968	2428	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe	33
PID 2428 wrote to memory of 1968	2428	JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  PID:2036
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c0904ab24a5a0e48dfb08d76ca712de5.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  PID:1968

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\5BD5.DB6

Filesize
1KB

MD5
b6ee2036f2896f7e5e15fa988d46565c

SHA1
c47f8f30e359685629a5e8ab5ebd94d1da7f67e4

SHA256
75ca34c055d4ec9a4a0a65e5f0f19afd7269bfa045c0ac41354d9660027380af

SHA512
11bfe082e863e2ead4ea0a44bc3f2ba1ecc638c171e39ac2fd2b201c94a34bc74896a9d20607df91d5f64146b412bfa9a4841f54b240e476ba377f860683aac7

Download Submit
C:\Users\Admin\AppData\Roaming\5BD5.DB6

Filesize
600B

MD5
59d079fd4c071ac576b7b895a628527d

SHA1
316acd9c1ab58edbe4b638543442d9e6a4e38e34

SHA256
15188a1772adc20c89186c33a18c08ac648f4243a862556560ae95bdb77c3444

SHA512
a44635c57dd6e768a38c671866fceb831ac814241a1aa36e2f7a0d89bb0f7f2a961bdc6ebc383c4fa18bfbabd382970bfaedc537aecdc003ddc6533d8f482a4d

Download Submit
C:\Users\Admin\AppData\Roaming\5BD5.DB6

Filesize
996B

MD5
a890ff29ccbed44df287f947da397cd0

SHA1
f9c21ca0d7868b6272d3086c5d6f93e84e126246

SHA256
48b69958843dbb8d8656c03a4d53014744f287c04c27aa770e417510dd2cfdc5

SHA512
bcd2e324fc400949a9a194ef677edea225e34e5aaef6041babdef3c5afb02b71773016b33e62e8fe49c58d36ac81f899c0b1d53d8944c68559919fd4362392d8

Download Submit
memory/1968-86-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1968-84-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2036-12-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2036-13-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2036-14-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2428-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2428-82-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2428-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2428-2-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2428-203-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads