cycbot | 1fbd2d21d2701a6b0404d9cc6a450820da3efaa28889b2978290ced398b63b82

General

Target

JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe
Size

165KB
MD5

7aec16a8fb5f01f89e648e335ab38cd3
SHA1

ecfbdcdff8e1536413e26ac257278fd31c522c1c
SHA256

1fbd2d21d2701a6b0404d9cc6a450820da3efaa28889b2978290ced398b63b82
SHA512

b3348027a8fad6a22a95a63bb30f1512bcea92f79777ca14205c24d9115641415f31358fc057bee22cd98a33c8b7a25db80440d05d27b6ab97d7be1327eb29a2
SSDEEP

3072:h5G2xOekJm/xV97W5OcP2kexGB+IQTca3ThqGAT5mekez5JvWXAn9F+lhw:XB7kJm/xr7W5Og+Y+QOh0w0zWXeSlhw

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/884-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/5096-16-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/5096-17-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/3312-119-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/5096-120-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/5096-278-0x0000000000400000-0x0000000000491000-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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\C83C7\\E71E4.exe"	JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5096-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/884-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/884-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/5096-16-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/5096-17-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/3312-119-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/5096-120-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/5096-278-0x0000000000400000-0x0000000000491000-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_7aec16a8fb5f01f89e648e335ab38cd3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5096 wrote to memory of 884	5096	JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe	82
PID 5096 wrote to memory of 884	5096	JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe	82
PID 5096 wrote to memory of 884	5096	JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe	82
PID 5096 wrote to memory of 3312	5096	JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe	87
PID 5096 wrote to memory of 3312	5096	JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe	87
PID 5096 wrote to memory of 3312	5096	JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe startC:\Program Files (x86)\LP\E4EC\1A5.exe%C:\Program Files (x86)\LP\E4EC
  2⤵
  PID:884
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aec16a8fb5f01f89e648e335ab38cd3.exe startC:\Program Files (x86)\C74F0\lvvm.exe%C:\Program Files (x86)\C74F0
  2⤵
  PID:3312

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\C83C7\74F0.83C

Filesize
596B

MD5
e9be4930e1161afe9b4f72d530e4c5cd

SHA1
d8e3f40bd71a0b882bb70afb7ca6d1bfc434c83b

SHA256
3c47df4d16d3dc6f213c3a8528ae3d904b559ad6bc3461ab8bdc5a73ea1ec785

SHA512
8c97e8971e0e6c652d56a0bc091bfd94025b50c7622e8ec823782bc534d2ab8a88dcf140d6c9db79720d58354c9f89340ff1a2738f3947082cd0e46e4b766f7d

Download Submit
C:\Users\Admin\AppData\Roaming\C83C7\74F0.83C

Filesize
996B

MD5
c12e2c1e81f36cdf468f573fb0a12f95

SHA1
e0148b1d33a781fdb8d6de4324eda126fd9a4167

SHA256
ebf7a24e88fde8002deabb07cd10a9ac48c40cc68cb35d0e433a19657da3efad

SHA512
3e8909d9e756342e75e256d10823660a2c389383ed0b3e141ac2b218ca42c9fecd1b7fd94b1e94e5b102a08fc35b5feda3c26919d68abb70a799148674e798b8

Download Submit
C:\Users\Admin\AppData\Roaming\C83C7\74F0.83C

Filesize
600B

MD5
67d858742af7fda1f23be284e968c760

SHA1
91ea764c9748974100a96a0add4006bb44ab4e72

SHA256
b54e5f3f93485b086426033b0ef85c45e59dba8ca9ff9fe1f0bdde9aa2172df3

SHA512
9ad826ff92cf14147eef4fdc6c3c61c42f2f05941dd5fa76332b13697fb96f4bfbe47e55175b186a1624686a189f5f3a81428b63b81c74d01be3f6688067c628

Download Submit
C:\Users\Admin\AppData\Roaming\C83C7\74F0.83C

Filesize
1KB

MD5
7decbc24ec0c5cdbe7e42e53c9022b03

SHA1
05f0f237227ac0ee4b0da341a5cd2b3543c24ed7

SHA256
13a06f6d64374be88120617eb8fe797ca34da7f9631bd4fb4fd4fa59104c8dc2

SHA512
4eafdcceb91a55a92ea1caa3666673a3c7ceff86117c67d82afc0a10212d0ec4ea27673b89206cb90104a58c7c7c0e3b9c4d62290ed570975e33289a72555ef3

Download Submit
memory/884-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/884-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/3312-119-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/5096-17-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/5096-16-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/5096-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/5096-120-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/5096-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/5096-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/5096-278-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads