cycbot | 101afb81cb6748091f919ecb695c4c2bf981ac9b37a7cad39de077ca4123b5cf

General

Target

JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe
Size

177KB
MD5

3958959cea06679f591c8920cbb00b9a
SHA1

b3fb1c0c1d03580a8bce4ab48b566bf182b16385
SHA256

101afb81cb6748091f919ecb695c4c2bf981ac9b37a7cad39de077ca4123b5cf
SHA512

22701ce63dd93b38c8043e53f20ebac34e617071535e3238748dc392ccd49cc8e64691b01be5cafb42df1bfe359259298f87d6c5fec1c60fae2581a090d6d994
SSDEEP

3072:st21N2N6buomS/bDoRIMmllcixB2X+ANGyyvpcXytVlSf8+CxZUO8C:sc1U4HjDoRIl7ci2+ANGFvZVlSfPCxv

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/2252-13-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/1916-15-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/1916-84-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/1248-88-0x0000000000400000-0x000000000046C000-memory.dmp	family_cycbot
behavioral1/memory/1916-205-0x0000000000400000-0x000000000046C000-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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.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/1916-2-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2252-13-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/2252-12-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/1916-15-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/1916-84-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/1248-86-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/1248-88-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral1/memory/1916-205-0x0000000000400000-0x000000000046C000-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_3958959cea06679f591c8920cbb00b9a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2252	1916	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe	30
PID 1916 wrote to memory of 2252	1916	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe	30
PID 1916 wrote to memory of 2252	1916	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe	30
PID 1916 wrote to memory of 2252	1916	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe	30
PID 1916 wrote to memory of 1248	1916	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe	32
PID 1916 wrote to memory of 1248	1916	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe	32
PID 1916 wrote to memory of 1248	1916	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe	32
PID 1916 wrote to memory of 1248	1916	JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3958959cea06679f591c8920cbb00b9a.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1248

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\C8EC.AB2

Filesize
1KB

MD5
a700fedd58095ba921b8f522f881f817

SHA1
7f866d487629b6a3b5ea18a71c1f9edb0256a404

SHA256
43898169deec775f623f635027348db292d7a22b6aac3642bb769155906337be

SHA512
1bd642959cb091c26b2044afbb4a21efe9566304d81680d4e710c87e81e6b6b8e648202521cf26da1a2c2a3c84d48704543fd42573db9c3d46296bdd5f5975b1

Download Submit
C:\Users\Admin\AppData\Roaming\C8EC.AB2

Filesize
600B

MD5
66eee3096d73dd6652b7030d006203c7

SHA1
7bcc853d15663f2584a04baed85bec6580631573

SHA256
5145c09cd495dfe6b6854a5a6ed398e690e63cae23cde19757b2406d367f2c8b

SHA512
bb97d8ca049f6aec4170d33579b8e29d2b39d7c972bd3b973cc4399604c98c4da42cd76b220933a607856d8eee51c7625cec11dea51afc99b8ed397b3a1c649f

Download Submit
C:\Users\Admin\AppData\Roaming\C8EC.AB2

Filesize
996B

MD5
285478901fbdbf6af17e9f2dac82260f

SHA1
2252a9e9d33d8d07d4fcbf12c8400c109fe11d9a

SHA256
2910b424d603b6606b815a706da53725ec35b174dd8036abdb8c1c41c34eec57

SHA512
a8e98da87936c2b94c7880ca4b163daaa7346ef4588315d00bb23b941e1ed94215f23c33353acb04ab725a948cc48be01b4e98383a41933696a40f221fe1437a

Download Submit
memory/1248-86-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1248-88-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1916-1-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1916-2-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1916-15-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1916-84-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1916-205-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2252-13-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/2252-12-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads