cycbot | 2c18b47588f93746be9eb64908defaef48fc3bee1cd06cf9b05c0887cc3d62c6

General

Target

JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
Size

166KB
MD5

41f7f2200cf39489f99f82ef1ab727d7
SHA1

c6af8c603910a3c6edd5600ff0d849c6d169cd23
SHA256

2c18b47588f93746be9eb64908defaef48fc3bee1cd06cf9b05c0887cc3d62c6
SHA512

68ae4c8c92800bfc8cd7eaf1801d9ea408f3932cdee4d909ddaeef2cdbfa7c9436e13d6b077a21eccaddb08fe453476f19fce79e11c6996e9434a1c1960e5ac7
SSDEEP

3072:Tqx0uMqX1Lkhk7CcjCcwikH2Z3YCx8gl7KFSAo1KUDRXiweGtGK7QmT:TqxgqX1LkhktfhkWAgpESAoKeRXiOR7T

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/724-15-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4008-16-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral2/memory/4008-17-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/404-135-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4008-137-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral2/memory/4008-311-0x0000000000400000-0x0000000000491000-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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\3CC6E\\6C81B.exe"	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4008-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/724-14-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/724-15-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4008-16-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral2/memory/4008-17-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/404-135-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/404-136-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4008-137-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral2/memory/4008-311-0x0000000000400000-0x0000000000491000-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_41f7f2200cf39489f99f82ef1ab727d7.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4008 wrote to memory of 724	4008	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	85
PID 4008 wrote to memory of 724	4008	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	85
PID 4008 wrote to memory of 724	4008	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	85
PID 4008 wrote to memory of 404	4008	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	99
PID 4008 wrote to memory of 404	4008	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	99
PID 4008 wrote to memory of 404	4008	JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4008
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe startC:\Program Files (x86)\LP\1B13\D85.exe%C:\Program Files (x86)\LP\1B13
  2⤵
  PID:724
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_41f7f2200cf39489f99f82ef1ab727d7.exe startC:\Program Files (x86)\6E45B\lvvm.exe%C:\Program Files (x86)\6E45B
  2⤵
  PID:404

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\3CC6E\E45B.CC6

Filesize
996B

MD5
5b4cbb66bbc82a69fa12b15798f60a31

SHA1
4beec94c39b0bfcad2ae09172e09f0a1850ca95e

SHA256
af00e39793c390e0e6a36dc55012fd3084e08083ad3d49dd8a4c1771137c6d61

SHA512
0b3d58d57722253fc46937c730bb59a14a6a99e5b29a4ce6f7f0bcbac6c7ffee0bbd536d2bf0bc638521e78fa142bfd7709f6b192e0d2a6a549296569c14e45c

Download Submit
C:\Users\Admin\AppData\Roaming\3CC6E\E45B.CC6

Filesize
600B

MD5
d468dd040c1d0df131fe2bc66f0f1f13

SHA1
9f5fc038cf8bb344b9d81da38f00177bce5260bf

SHA256
e0394c5db3492a5d903783715beb4930b70f096c147aea3c0bf4f007279b6634

SHA512
66534719215d09416e348fc4f8da088c7172343df1231c5f6dfadb22eb1326ca4c92ba883cfcb4a252857e2f5d725cd150a0d308107c25ca488ccb16d5488cac

Download Submit
C:\Users\Admin\AppData\Roaming\3CC6E\E45B.CC6

Filesize
1KB

MD5
e6595c4525efff33b7601cfcdb5df663

SHA1
382d4258c4b0f759098c4fb8a5fba181dd1d14f5

SHA256
e1ba1b92ee7998d26c700b66187330a42f6fdeab674960b47a1021814ef914e3

SHA512
c4bf195e5f9189e95cf9eabb057dea5f2f9637d5abf70b5eaf48d7cf540efc56138c1dfa07f0238a6d8f07ab08392063e6792b5bb65402aa40917ad5283e9a25

Download Submit
memory/404-136-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/404-135-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/724-14-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/724-15-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4008-17-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4008-16-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4008-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4008-137-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4008-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/4008-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/4008-311-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads