cycbot | f59245b84b7115063382965ac68e0e21351e2cd8775512319959698e4fbbb6b2

General

Target

df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe
Size

169KB
MD5

df9793eb2e2ca59a93cf5f81c9d909cc
SHA1

ab2f7c91e16fcaca8d465b3b7ad585629657749f
SHA256

f59245b84b7115063382965ac68e0e21351e2cd8775512319959698e4fbbb6b2
SHA512

60c2fe549a5664d5edf65ff7b3177a8c591e82f69a5a6a550b51e36805fb87996407946d3b4a3e91af15f184eed8e40f95fb89e4827be7378e0006433634290c
SSDEEP

3072:+W/iD3zdj3IKcSIN0IfyoJVSG9M0YFJqnu/PcC1RGM/MXnxxDJCQm:x/iD3zJ3IhSINDa+79M04J7PJRNU3x5m

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 9 IoCs

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

resource	yara_rule
behavioral1/memory/1912-13-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1912-12-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1156-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral1/memory/1156-16-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1864-88-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1864-87-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1156-89-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1156-156-0x0000000000400000-0x0000000000490000-memory.dmp	family_cycbot
behavioral1/memory/1156-182-0x0000000000400000-0x0000000000490000-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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\D9B29\\C0BBD.exe"	df9793eb2e2ca59a93cf5f81c9d909cc_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 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1156-2-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1912-13-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1912-12-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1156-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral1/memory/1156-16-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1864-88-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1864-87-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1156-89-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1156-156-0x0000000000400000-0x0000000000490000-memory.dmp	upx
behavioral1/memory/1156-182-0x0000000000400000-0x0000000000490000-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	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1156 wrote to memory of 1912	1156	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe	30
PID 1156 wrote to memory of 1912	1156	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe	30
PID 1156 wrote to memory of 1912	1156	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe	30
PID 1156 wrote to memory of 1912	1156	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe	30
PID 1156 wrote to memory of 1864	1156	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe	33
PID 1156 wrote to memory of 1864	1156	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe	33
PID 1156 wrote to memory of 1864	1156	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe	33
PID 1156 wrote to memory of 1864	1156	df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Users\Admin\AppData\Local\Temp\df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe startC:\Program Files (x86)\LP\BD1D\96D.exe%C:\Program Files (x86)\LP\BD1D
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1912
- C:\Users\Admin\AppData\Local\Temp\df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\df9793eb2e2ca59a93cf5f81c9d909cc_JaffaCakes118.exe startC:\Program Files (x86)\297A4\lvvm.exe%C:\Program Files (x86)\297A4
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1864

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\D9B29\97A4.9B2

Filesize
1KB

MD5
d80850994d7d63a7e21390c9eebc3dec

SHA1
12d1e5b07ad1dd02044e705fb1df29441237f75a

SHA256
ff6294749ae2a5b6e895cef9582058d856e23d69f973e915dc3a88d82004518b

SHA512
7ffb5bb39af9d533bdbb12ac71c1e7514a8608a8904d6af957f473b54837bb5551567a655f8071c07e5d19c6bdd618fa5297b3475a0d09c57129b0dfcd255c5b

Download Submit
C:\Users\Admin\AppData\Roaming\D9B29\97A4.9B2

Filesize
600B

MD5
9df0fcccd83ef6572dd34df405e2203b

SHA1
ed3b111cee31e1ebc9595f65864b78d056e5c1a2

SHA256
b6f16db2453c1da05e5936bf3e71802c0c7c4e9630126b3f84093da45aead274

SHA512
f2318da8a3480c4f8e28fa726519411939566bd287b5a23b1a26b36ea7f7df406f814712fdb7ea5d355f2e576a16ba24eb027cd3f3d49374f3fe633f15063309

Download Submit
C:\Users\Admin\AppData\Roaming\D9B29\97A4.9B2

Filesize
996B

MD5
1903c9602a47d530e629dd6a4f91c23c

SHA1
1d986eb2eca15c2ee320bd01f736c733d90c1ef8

SHA256
99f3ed0b6345b36ea748db3072f8e8f8e834fc95f0f748ef65cbe6fa98053ca6

SHA512
07090f9a45bab1944fa0bef9958d25ade349dcf940300489a3067e46618863b3c72e1e836aa2462e4bf4c9d3cbcae78c225f7b7eec5d4cee49a0038cc06f12ec

Download Submit
memory/1156-89-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1156-2-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1156-182-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1156-156-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1156-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1156-16-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1156-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1864-88-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1864-85-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1864-87-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1912-14-0x0000000000490000-0x000000000050B000-memory.dmp

Filesize
492KB

Download
memory/1912-12-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1912-13-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads