cycbot | 8f21d1e948b0b999cc58706dfb5ceb8553ae0368737eecf96d5bc38565bb1bc5

General

Target

JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe
Size

177KB
MD5

6b114e983562a572b9c5cf5d1e8faaaa
SHA1

f9544355eb30380263902b13c16bc4f2fb8d1302
SHA256

8f21d1e948b0b999cc58706dfb5ceb8553ae0368737eecf96d5bc38565bb1bc5
SHA512

2fef35dfdf91d54ffa7eb921ab875dfa1b0a044d77967cc780dcef9d18ec4ed09d5a2f4fd143ea0d6ad223355027b2326c73d7f1d7b86ed2ed49eb5a8a665e36
SSDEEP

3072:7J2sg/xi84Z9rVpXWFZk5aDsmWOZHL2CagC1PDxgjjNWLKSDhDjtGsw:7I/74Z9RpXWFu5wnZNIPtgjjNW2SDRG

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 6 IoCs

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

resource	yara_rule
behavioral1/memory/2792-8-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2792-10-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1728-15-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/2968-88-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1728-149-0x0000000000400000-0x000000000046E000-memory.dmp	family_cycbot
behavioral1/memory/1728-194-0x0000000000400000-0x000000000046E000-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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1728-1-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2792-8-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2792-7-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2792-10-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1728-15-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2968-87-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/2968-88-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1728-149-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1728-194-0x0000000000400000-0x000000000046E000-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_6b114e983562a572b9c5cf5d1e8faaaa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2792	1728	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe	30
PID 1728 wrote to memory of 2792	1728	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe	30
PID 1728 wrote to memory of 2792	1728	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe	30
PID 1728 wrote to memory of 2792	1728	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe	30
PID 1728 wrote to memory of 2968	1728	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe	32
PID 1728 wrote to memory of 2968	1728	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe	32
PID 1728 wrote to memory of 2968	1728	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe	32
PID 1728 wrote to memory of 2968	1728	JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6b114e983562a572b9c5cf5d1e8faaaa.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968

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

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Downloads

C:\Users\Admin\AppData\Roaming\A853.7E5

Filesize
1KB

MD5
66b24ebd054c48817e4d6d241956c17b

SHA1
9ed1df57960c3269904179327b5070f32b161ca4

SHA256
14f27c97c7be38db7bb29d006be9c691f046045e6e0601c8896588fef9e3b3bf

SHA512
d622db287f4526a8094ac2e31bb49542ef6b621c0d9f030a749f74e539438b7399c1eb0e52972ff2d76056d55fa6fa0cd4e3abb337354880c4e0e70c879eef99

Download Submit
C:\Users\Admin\AppData\Roaming\A853.7E5

Filesize
600B

MD5
42f42bfc1642b551fc042841b1dcd125

SHA1
1f909edb74fb7071976201ab944295f587a59404

SHA256
94c3aae166254cd126da716eafd572463deee97893f0a0e5aa2f873a74b2535f

SHA512
d794ab81f5b6af74ed91f55ecc66f0c4ab5b050e7bdc0d44e3fbac41c6d2fb2166ebdf60ad507876381dba685e2c0d811d2835d45061028bf849147526b93c8b

Download Submit
C:\Users\Admin\AppData\Roaming\A853.7E5

Filesize
996B

MD5
1e902fd76ff132fe5f130558a9ea0b36

SHA1
45c0b541c5ff8ba9011ffec377881907cac2da94

SHA256
89f5df2a3e86db2dd78fb51bcb35a9185be306ed94b1b880a8edc462b9399bca

SHA512
109cd1e76c55290ac2f961895a1a106d58516470d531ea2b90714b5fff27069de8593582babdead0a396f0f42db3eae7ac9e513e286e180c801c784bf28b9c30

Download Submit
memory/1728-194-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1728-1-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1728-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1728-149-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2792-10-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2792-7-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2792-8-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2968-88-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2968-87-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2968-86-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads