cycbot | b668c2c9abf831b3e4996cab451136b3f31bde043c58a1a8dab7eec9c39ba695

General

Target

f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
Size

181KB
MD5

f459120dbaf13bba31e468000acf914e
SHA1

f93f142ac0ec160314e474b4c43466d9a3d6f8c9
SHA256

b668c2c9abf831b3e4996cab451136b3f31bde043c58a1a8dab7eec9c39ba695
SHA512

e53ce5b6025e545280ceeda09502ab138ff455751866489881a3b2b33f02b7c38814fecbe669fd5f756beca5c2dc7b722ae1e30d3485974e87a40135546f4818
SSDEEP

3072:vz/zHKv0tkAeX/y8p8xqIoV3gTLe3Xgk5FS+4+Gy5t56Wzf95:b7HKukpPyM8xqIotALe3weFs+54W

Score

10^/10

cycbot backdoor discovery persistence rat 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
behavioral2/memory/4024-14-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/744-15-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/1724-89-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/744-154-0x0000000000400000-0x000000000048D000-memory.dmp	family_cycbot
behavioral2/memory/744-208-0x0000000000400000-0x000000000048D000-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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\dwm.exe"	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/744-2-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/4024-12-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/4024-14-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/744-15-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1724-88-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/1724-89-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/744-154-0x0000000000400000-0x000000000048D000-memory.dmp	upx
behavioral2/memory/744-208-0x0000000000400000-0x000000000048D000-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	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 744 wrote to memory of 4024	744	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	83
PID 744 wrote to memory of 4024	744	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	83
PID 744 wrote to memory of 4024	744	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	83
PID 744 wrote to memory of 1724	744	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	93
PID 744 wrote to memory of 1724	744	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	93
PID 744 wrote to memory of 1724	744	f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe	93

C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:744
- C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe startC:\Users\Admin\AppData\Roaming\Microsoft\conhost.exe%C:\Users\Admin\AppData\Roaming\Microsoft
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4024
- C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\f459120dbaf13bba31e468000acf914e_JaffaCakes118.exe startC:\Users\Admin\AppData\Local\Temp\csrss.exe%C:\Users\Admin\AppData\Local\Temp
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1724

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\7470.9F6

Filesize
1KB

MD5
d1b16a021e593ab984df06e7c2dd834e

SHA1
b9e92b1366f24417219101fce80d3d8a19386b30

SHA256
5e30ad612df8e77499b4976cba0f9fd2aae65c6e8f80044e1eaeb8b35e3ab282

SHA512
9d7cbdf4a16bf236376556f5a45e614dd70f7313a729c3f46ce591fde4fae01f242c01961f2000f4091eb220f319e5822467805aff8a17c2720b81c3e952fb28

Download Submit
C:\Users\Admin\AppData\Roaming\7470.9F6

Filesize
600B

MD5
d9ae590f61ab3e9b0bf30a0a3803fc3c

SHA1
143699c0e683815a6397aeb41c545b85bcbf5856

SHA256
faaf187fa0db5ac9fe4474b035de8d2b675535f497543d8c6d71a3e7b077eeb6

SHA512
8327b01b8cea053dc827a785e3b56f42090c12e75ef9ba8d34685d781a352b66e9aeb03c88dcaed6bb6e82a69dd8c3bd63ef7238121b77e9ed75f3c035282d49

Download Submit
C:\Users\Admin\AppData\Roaming\7470.9F6

Filesize
996B

MD5
d914b73f4e64f750920c052ed1f02488

SHA1
bbf9eb005f6cb5b227af49f76ba2903cb4b34f90

SHA256
138bb20d8db709ffef697edfcd451e122a71c98eca10cfce5811026d992065ca

SHA512
65c44c740438a56a75c00c7a636d7d2a1cb401c9960692ed294bc3eb0cb56d9e3a3859855fa16c67f0207c2e93630535a23d2a7ebb870f88c44b3ff47904b90b

Download Submit
memory/744-1-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/744-2-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/744-15-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/744-154-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/744-208-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1724-88-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/1724-89-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4024-12-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download
memory/4024-14-0x0000000000400000-0x000000000048D000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads