9074df44b28f06d434aac15a1a7f52c569bee277f46056153324169354fec2a6

General

Target
265159bf9c371bbef1ed26548502de0c.exe
Size 68KB
Sample240706-bvtebs1hlk
SHA256 9074df44b28f06d434aac15a1a7f52c569bee277f46056153324169354fec2a6
MD5 265159bf9c371bbef1ed26548502de0c
SHA1 f6f752aaf72bed283464bed5a47831872035ef2b
SHA512 7ec217e475f0ee4caa28408f5ad90a6ba18e4a9d79577c91c1fcb6f1b4393ba928ce08afbe5b6944c0514525914dbbd414de03863f2d8cbe78fbde8c9ebd93da
SSDEEP 1536:BDazzKrSwsZI0WSdwsWf7+Wgbq9wm2c8V:B+HKcZpSLgG5
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

defense_evasion discovery exploit upx

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
432	takeown.exe
1440	icacls.exe

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-1-5-21-2480455240-981575606-1030659066-1000\Control Panel\International\Geo\Nation	265159bf9c371bbef1ed26548502de0c.exe

Deletes itself 1 IoCs

pid	Process
1640	regsvr32.exe

Loads dropped DLL 1 IoCs

pid	Process
1640	regsvr32.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
432	takeown.exe
1440	icacls.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3852-0-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3852-3-0x0000000000400000-0x0000000000421000-memory.dmp	upx

File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
defense_evasion

Windows File and Directory Permissions Modification
T1222.001

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\apa.dll	regsvr32.exe
File created	C:\Windows\SysWOW64\rpcss.dll	regsvr32.exe
File opened for modification	C:\Windows\SysWOW64\rpcss.dll	regsvr32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe
1640	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	regsvr32.exe
Token: SeTakeOwnershipPrivilege	432	takeown.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 1640	3852	265159bf9c371bbef1ed26548502de0c.exe	85
PID 3852 wrote to memory of 1640	3852	265159bf9c371bbef1ed26548502de0c.exe	85
PID 3852 wrote to memory of 1640	3852	265159bf9c371bbef1ed26548502de0c.exe	85
PID 1640 wrote to memory of 432	1640	regsvr32.exe	86
PID 1640 wrote to memory of 432	1640	regsvr32.exe	86
PID 1640 wrote to memory of 432	1640	regsvr32.exe	86
PID 1640 wrote to memory of 1440	1640	regsvr32.exe	88
PID 1640 wrote to memory of 1440	1640	regsvr32.exe	88
PID 1640 wrote to memory of 1440	1640	regsvr32.exe	88
PID 1640 wrote to memory of 788	1640	regsvr32.exe	10

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p
1⤵
PID:788

C:\Users\Admin\AppData\Local\Temp\265159bf9c371bbef1ed26548502de0c.exe
"C:\Users\Admin\AppData\Local\Temp\265159bf9c371bbef1ed26548502de0c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Windows\SysWOW64\regsvr32.exe
  "C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~~e57cda0.tmp ,C:\Users\Admin\AppData\Local\Temp\265159bf9c371bbef1ed26548502de0c.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1640
- - C:\Windows\SysWOW64\takeown.exe
    takeown /f "C:\Windows\system32\rpcss.dll"
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:432
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Windows\system32\rpcss.dll" /grant administrators:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

2

T1222

Windows File and Directory Permissions Modification

1

T1222.001

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

~~e57cda0.tmp

Path C:\Users\Admin\AppData\Local\Temp\~~e57cda0.tmp
Size 1.0MB
SHA256 a8c35767dbcecf592041d11faea6e0185070f6496fc519054174fb01a1388859
MD5 d77f8cf9642d3bfcd0b518af1e99a18f
SHA1 f292ee7f1c8905eb0036ca3ae2c16b23eb858b67
SHA512 2d6e7f49b20d62a516f35637a74a393d00640b99ed4321f58772e7d1de86e322657f3c7d9fab5a953e93924d3d9e70f6755b53ffef3cc5c745793ae33ab4d932
SSDEEP 3072:axJjKpce9PAUiTcYk/XokzrtmI7YNnv3q7x3M:gJgcKYKXrzrtmI7YNnvq7t
MD5 SHA1 SHA512 SSDEEP

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apa.dll

Path C:\Windows\SysWOW64\apa.dll
Size 225B
SHA256 97d91e851b1d76420afeb4b5220797bbd94fcbb5847e83516edf416c499e7896
MD5 909cd4dcb306541295f273f6c28affed
SHA1 f03aa4587ae6b876ecb7628576779cb484416ca5
SHA512 7fd614fd2f440a1074f9cbbb8d88b51af3b73eeb5b8b69f3879f1e835270d68d306839af2495f7c6ac9868211bcc01b918c664027eb9c17fa8a6940ccf42fc8f
MD5 SHA1 SHA512

Submit Download

memory/3852-0-0x0000000000400000-0x0000000000421000-memory.dmp

Download

memory/3852-3-0x0000000000400000-0x0000000000421000-memory.dmp