cycbot | 256b509ebe52bad08fe0226c48afb011b58225a32a155e787ad0d4e94c2386e4

General

Target

JaffaCakes118_df1eb987830bda517469d30806e774ad.exe
Size

164KB
MD5

df1eb987830bda517469d30806e774ad
SHA1

284bbec0b74f3916f52bbc89ddc51cdd8e4b634a
SHA256

256b509ebe52bad08fe0226c48afb011b58225a32a155e787ad0d4e94c2386e4
SHA512

9e76ea50df57fb74377dc529d52cef739a7af58fd8e067e515f10da65313ed5c94a87385eb8a42a848229b6dab58afe2ded44935c988c8e461def0e7040c8f65
SSDEEP

3072:hGU0Ivg461pW09rkkhfKEvaQYFz9ejlLbobgum1krNHDh7RFGkBUjis3RMLB:hGU0cLo00mCQh9IlvogVC5N7rfUuaMLB

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 7 IoCs

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

resource	yara_rule
behavioral1/memory/2812-21-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2812-20-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2256-22-0x0000000000400000-0x000000000048E000-memory.dmp	family_cycbot
behavioral1/memory/2256-23-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2100-143-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2256-144-0x0000000000400000-0x0000000000491000-memory.dmp	family_cycbot
behavioral1/memory/2256-310-0x0000000000400000-0x0000000000491000-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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\50FA4\\94FC8.exe"	JaffaCakes118_df1eb987830bda517469d30806e774ad.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 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2256-3-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2812-21-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2812-20-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2256-22-0x0000000000400000-0x000000000048E000-memory.dmp	upx
behavioral1/memory/2256-23-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2100-142-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2100-143-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2256-144-0x0000000000400000-0x0000000000491000-memory.dmp	upx
behavioral1/memory/2256-310-0x0000000000400000-0x0000000000491000-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_df1eb987830bda517469d30806e774ad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2812	2256	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe	30
PID 2256 wrote to memory of 2812	2256	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe	30
PID 2256 wrote to memory of 2812	2256	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe	30
PID 2256 wrote to memory of 2812	2256	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe	30
PID 2256 wrote to memory of 2100	2256	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe	32
PID 2256 wrote to memory of 2100	2256	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe	32
PID 2256 wrote to memory of 2100	2256	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe	32
PID 2256 wrote to memory of 2100	2256	JaffaCakes118_df1eb987830bda517469d30806e774ad.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_df1eb987830bda517469d30806e774ad.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_df1eb987830bda517469d30806e774ad.exe"
1⤵
- Modifies WinLogon for persistence
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_df1eb987830bda517469d30806e774ad.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_df1eb987830bda517469d30806e774ad.exe startC:\Program Files (x86)\LP\C885\747.exe%C:\Program Files (x86)\LP\C885
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_df1eb987830bda517469d30806e774ad.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_df1eb987830bda517469d30806e774ad.exe startC:\Program Files (x86)\A40B1\lvvm.exe%C:\Program Files (x86)\A40B1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2100

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\50FA4\40B1.0FA

Filesize
597B

MD5
79c50a788c95baf0d618e8f64655a1f4

SHA1
4df8dabc4326660a15b124caed61365ff95c29e3

SHA256
42a238f046e259666078133ffecaa61679de823b0519c70aedb4f86cd83d382b

SHA512
ec91ab132cc3ad849f37e43ad09f71a9f596f86130fc77eac61452ac16a026cccfa28d9240c2f2495e4c97f92510c164ed0da8966cb9776729f9fb5f3b70ea57

Download Submit
C:\Users\Admin\AppData\Roaming\50FA4\40B1.0FA

Filesize
1KB

MD5
6d4ef9eacb6c56c6248821d50e4c5a62

SHA1
b045dc05d939c5f7bd5669e8c1fcaccc82e9710a

SHA256
1d731c26eee44423f33bd35395f2657d29a851d4e19eae85a29c21f12db4b7bb

SHA512
7b49303ba02b3637c7bc8aad10c6395067c593806463987acc362b829e14bdc11b2e7a51b7ffa1b2af5469a3adf9727d74cb745833ed4ddf60efc3774f35ccd7

Download Submit
C:\Users\Admin\AppData\Roaming\50FA4\40B1.0FA

Filesize
1KB

MD5
9cfe950f21347b38f071389a37bc5062

SHA1
70a7d72badd289daf6a4611280c7ca8b1e1c6acf

SHA256
f4446886b5f9bef5a96ae9b1f1688cd9ab1af5ed5fbd9db9ee002acb005e59dc

SHA512
77f8883fca7cf71cfc4cad603c13a5a626707bcfa79635107afa6a64d8fd11481290fd6bc8e28a9c3f548b02272fe4d6901ce8f62ad1b57d55c3a204b2ad59f0

Download Submit
C:\Users\Admin\AppData\Roaming\50FA4\40B1.0FA

Filesize
897B

MD5
8d00b69e3768d7242afd4167dd9f812e

SHA1
daded74a91179b1668cd472289527d10b96b541a

SHA256
538bc0ec9426e7abedb82e504f9eb2874362a414de1a42c8913edf71d52e31a3

SHA512
e31bb8a2c28ca6921192be13e4bb9cb9d87df61563ef66d9a44325337251a85e7eb56ecb6c65f807447f2943d3ffa76e2d5dd6ec5daff7328318dd97aa360dbb

Download Submit
memory/2100-142-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2100-143-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2256-22-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2256-23-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2256-0-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2256-144-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2256-3-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2256-2-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/2256-310-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2812-20-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download
memory/2812-21-0x0000000000400000-0x0000000000491000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads