04e4d18d9029c46da00d048441689bea7a2ad67975958d6a452eb5180c67daa6

General

Target

c1d6b600261c8fa506046e27639d8104.exe
Size

23KB
MD5

c1d6b600261c8fa506046e27639d8104
SHA1

bbbaabbfde4e94613f690a3b3ece8c12fb3c8d4a
SHA256

04e4d18d9029c46da00d048441689bea7a2ad67975958d6a452eb5180c67daa6
SHA512

2878e066346ea9115e21435c79954ef751b7f42e773c7d298eef41a4b1ef8e733641f5303f1c8ed6bbe655910c0431104af1e539a462af7665a300435e896d14
SSDEEP

384:ENwx70GGigxf+FhQrSmtlWCMHQw2iVPnQ3tJgFwmiBGFPYrtDLma8nyYeC0:b773gx2FhQrdtbMHGQ4vBGhYDLma8ndi

Score

10^/10

persistence upx

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	c1d6b600261c8fa506046e27639d8104.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\CBD236B7 = "{CBD236B7-B762-4832-AEC1-D3178F03C71B}"	c1d6b600261c8fa506046e27639d8104.exe

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	c1d6b600261c8fa506046e27639d8104.exe

Loads dropped DLL 1 IoCs

pid	Process
3120	c1d6b600261c8fa506046e27639d8104.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3120-0-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral2/memory/3120-29-0x0000000000400000-0x0000000000417000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\cbdijmbn.dll	c1d6b600261c8fa506046e27639d8104.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBD236B7-B762-4832-AEC1-D3178F03C71B}\InProcServer32	c1d6b600261c8fa506046e27639d8104.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	c1d6b600261c8fa506046e27639d8104.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	c1d6b600261c8fa506046e27639d8104.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBD236B7-B762-4832-AEC1-D3178F03C71B}	c1d6b600261c8fa506046e27639d8104.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBD236B7-B762-4832-AEC1-D3178F03C71B}\InProcServer32\ = "C:\\Windows\\SysWow64\\cbdijmbn.dll"	c1d6b600261c8fa506046e27639d8104.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBD236B7-B762-4832-AEC1-D3178F03C71B}\InProcServer32\ThreadingModel = "Apartment"	c1d6b600261c8fa506046e27639d8104.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3120	c1d6b600261c8fa506046e27639d8104.exe
3120	c1d6b600261c8fa506046e27639d8104.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3120	c1d6b600261c8fa506046e27639d8104.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3120 wrote to memory of 4660	3120	c1d6b600261c8fa506046e27639d8104.exe	89
PID 3120 wrote to memory of 4660	3120	c1d6b600261c8fa506046e27639d8104.exe	89
PID 3120 wrote to memory of 4660	3120	c1d6b600261c8fa506046e27639d8104.exe	89

C:\Users\Admin\AppData\Local\Temp\c1d6b600261c8fa506046e27639d8104.exe
"C:\Users\Admin\AppData\Local\Temp\c1d6b600261c8fa506046e27639d8104.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Checks computer location settings
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3120
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\SelfDel.bat" "
  2⤵
  PID:4660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\SelfDel.bat

Filesize
279B

MD5
2351fb5aace5c30fe307b26ee8029dd0

SHA1
8de2bde9e5241b8f59b99bcce04f0e7fd5ebb925

SHA256
aa30b63e2658b9d0088f15c9192e3e8a5ff06ba91aebdda14d01d21a55d6f624

SHA512
f97aab2117e05ae584b47bd37a57649ffd3dd642eb0108fbe1c61656320226da02b3d8ffd0a91fb2f4a2f1fc95eaf84633fcecf31b96311db739cab6260f3af1

Download Submit
C:\Windows\SysWOW64\cbdijmbn.dll

Filesize
44KB

MD5
49ed89fb90a0caa60fc5bee22e8273df

SHA1
f968692fd23fc949e70667d2c6501fd1bd8a7dfe

SHA256
09811d0b3fe3b0d9a77be81d41e3a086f16270b7534a2b283c0d97b4c450c756

SHA512
d5740d0ffededb5bab99fbb15afe85d107403c40737ce134b62d9782002e4c68064e5e40ad17473e131662349cb9863deef5bf67a46df8cdd59fc2bfe7ee75ed

Download Submit
memory/3120-6-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/3120-30-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

Filesize
4KB

Download
memory/3120-4-0x0000000000B00000-0x0000000000B01000-memory.dmp

Filesize
4KB

Download
memory/3120-5-0x0000000000550000-0x0000000000551000-memory.dmp

Filesize
4KB

Download
memory/3120-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3120-7-0x0000000000B30000-0x0000000000B31000-memory.dmp

Filesize
4KB

Download
memory/3120-8-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download
memory/3120-9-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

Filesize
4KB

Download
memory/3120-10-0x0000000000540000-0x0000000000541000-memory.dmp

Filesize
4KB

Download
memory/3120-11-0x0000000000520000-0x0000000000521000-memory.dmp

Filesize
4KB

Download
memory/3120-3-0x0000000000AF0000-0x0000000000AF1000-memory.dmp

Filesize
4KB

Download
memory/3120-17-0x0000000000BC0000-0x0000000000BC1000-memory.dmp

Filesize
4KB

Download
memory/3120-2-0x0000000000B40000-0x0000000000B41000-memory.dmp

Filesize
4KB

Download
memory/3120-20-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

Filesize
4KB

Download
memory/3120-18-0x0000000000C30000-0x0000000000C31000-memory.dmp

Filesize
4KB

Download
memory/3120-21-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/3120-22-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

Filesize
4KB

Download
memory/3120-23-0x0000000000B90000-0x0000000000B91000-memory.dmp

Filesize
4KB

Download
memory/3120-24-0x0000000000AC0000-0x0000000000AC1000-memory.dmp

Filesize
4KB

Download
memory/3120-25-0x0000000000BB0000-0x0000000000BB1000-memory.dmp

Filesize
4KB

Download
memory/3120-26-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

Filesize
4KB

Download
memory/3120-19-0x0000000000B10000-0x0000000000B11000-memory.dmp

Filesize
4KB

Download
memory/3120-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3120-1-0x0000000000AE0000-0x0000000000AE1000-memory.dmp

Filesize
4KB

Download
memory/3120-32-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads