cycbot | 2e07ec34fa646659226d4b004bdadc0da6f462e8d69cb88607b157b52cc32d6d

General

Target

JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe
Size

177KB
MD5

5b9142d6316eb42620f9c0a51d58e99a
SHA1

419d6d02b650d0a57b5c3a37a4abb7c6553c1363
SHA256

2e07ec34fa646659226d4b004bdadc0da6f462e8d69cb88607b157b52cc32d6d
SHA512

76c7996aa7f5219423da232c862586a311c106fd7f76b392bf1fd12e683417592feeb5262ec45be39bdff6d515bf579678c5cb800fa483549876f3dbd20436c8
SSDEEP

3072:tRHpQhbq6/CQuMOEg2Iuqvrr4RP09xZX787esJoOErMDHqD9jh1:tRHq46qQ52uqvAR0z5Ie4y4+Dp

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 6 IoCs

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

resource	yara_rule
behavioral2/memory/2760-12-0x0000000000400000-0x0000000000496000-memory.dmp	family_cycbot
behavioral2/memory/1452-15-0x0000000000400000-0x0000000000496000-memory.dmp	family_cycbot
behavioral2/memory/2760-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4484-140-0x0000000000400000-0x0000000000496000-memory.dmp	family_cycbot
behavioral2/memory/2760-141-0x0000000000400000-0x0000000000496000-memory.dmp	family_cycbot
behavioral2/memory/2760-303-0x0000000000400000-0x0000000000496000-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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\F666C\\AEBE9.exe"	JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2760-2-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/2760-3-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral2/memory/2760-12-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral2/memory/1452-14-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral2/memory/1452-15-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral2/memory/2760-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4484-139-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral2/memory/4484-140-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral2/memory/2760-141-0x0000000000400000-0x0000000000496000-memory.dmp	upx
behavioral2/memory/2760-303-0x0000000000400000-0x0000000000496000-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_5b9142d6316eb42620f9c0a51d58e99a.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 1452	2760	JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe	84
PID 2760 wrote to memory of 1452	2760	JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe	84
PID 2760 wrote to memory of 1452	2760	JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe	84
PID 2760 wrote to memory of 4484	2760	JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe	87
PID 2760 wrote to memory of 4484	2760	JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe	87
PID 2760 wrote to memory of 4484	2760	JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe startC:\Program Files (x86)\LP\E93F\873.exe%C:\Program Files (x86)\LP\E93F
  2⤵
  PID:1452
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5b9142d6316eb42620f9c0a51d58e99a.exe startC:\Program Files (x86)\6C974\lvvm.exe%C:\Program Files (x86)\6C974
  2⤵
  PID:4484

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

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Downloads

C:\Users\Admin\AppData\Roaming\F666C\C974.666

Filesize
996B

MD5
a228084a4e0d111a6fad74df0c7f2747

SHA1
5b94e36d5907c670f520af4a681f6e0b7c6a1574

SHA256
47cb0ac17db20e44e2ca2c07b689ef3567b98c692ef350ce489c44ed12edd66a

SHA512
0989ef648e0e6b3896a3d66dcd2773c7e609a54315384191718f908953c52a7ccfec8a47376a0ff924f937a14baca782bae67b4954a7197ed17ef8a2c2e170ae

Download Submit
C:\Users\Admin\AppData\Roaming\F666C\C974.666

Filesize
600B

MD5
6a9e81f3f8e369dd7f41070f276e8798

SHA1
233fbed05a791ce6c74382d3352958e71a2c59b7

SHA256
9070d09f9e0a2e728fb3595f43ebe76a9c09669523dd4dad3fb6566eb6f1e78c

SHA512
1d1270a6c97d82a5055d0c7eaf30a7bab6f475529e93d8e5870cd1a4f579a09372078be990b1958b8894220ca9cf583ea01dfb5f900b3e1866153e833e9142bd

Download Submit
C:\Users\Admin\AppData\Roaming\F666C\C974.666

Filesize
1KB

MD5
c737069cc57a4d8ada38ebeea23cf5d1

SHA1
789fb1621867c9bdf25e32f0169bff3c35a6e099

SHA256
3ba17a49d8828d700c1b75f6058316e936e20bcf31d6fff717d63c489318defc

SHA512
aabe69d144735446b5adcc9224dd49e1025508b0b7135d1c8f0ac0cdfaaacd2aa6fc38cca17435083410da756c941fba92fd98ec2ad4c17752ee8373b8bcedff

Download Submit
memory/1452-15-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/1452-14-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/2760-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2760-0-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/2760-12-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/2760-141-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/2760-3-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/2760-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2760-303-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/4484-138-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/4484-139-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/4484-140-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads