75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a

General

Target
75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe
Size 65KB
Sample241103-acchesslbm
SHA256 75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a
MD5 0ffaa4127dfb708edc80cf4692c7ada8
SHA1 603009044f51138c2231e96da010b75466218272
SHA512 78f531d4ef00045644af686ac8aa070f10408bfb00d70c1d82da9ac33519a6b6078f8a53512995bd886759db8b391eb79262e87ec438895c3d54ad7f8df20d3f
SSDEEP 768:OrItKyw5WHXfQmjIiIk9ecAa6cMb964yXhDLdXgggR:Or3Z5IfQmv81awvyX5Z4
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

defense_evasion discovery evasion

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2564	attrib.exe

Deletes itself 1 IoCs

pid	Process
2984	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1284	rwmhost.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\rwmhost.exe	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	attrib.exe
File created	C:\Windows\Debug\rwmhost.exe	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rwmhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2564	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe	30
PID 2380 wrote to memory of 2564	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe	30
PID 2380 wrote to memory of 2564	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe	30
PID 2380 wrote to memory of 2564	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe	30
PID 2380 wrote to memory of 2984	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe	33
PID 2380 wrote to memory of 2984	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe	33
PID 2380 wrote to memory of 2984	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe	33
PID 2380 wrote to memory of 2984	2380	75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe	33

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2564	attrib.exe

C:\Users\Admin\AppData\Local\Temp\75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe
"C:\Users\Admin\AppData\Local\Temp\75da621b20891a2437bc07153c8c6b0c0a4a9d6b052bcfd6261dab04f480da8a.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\rwmhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:2564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\75DA62~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2984

C:\Windows\Debug\rwmhost.exe
C:\Windows\Debug\rwmhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

rwmhost.exe

Path C:\Windows\debug\rwmhost.exe
Size 65KB
SHA256 f14637f11e71489c227db096715ad072f879924c2363f3dd81795f88982fd774
MD5 b8b3a8e18d2a8f0644766c4347b56de2
SHA1 b84760e8c99c08786a78609af5c51263c49b8742
SHA512 5dd8b006d27aa6f8402dc6cf741b9e1d06ee6505da9063ea12d1afc1cd52227f9abdc8210124e7aca4272ef8b645236492ff1e78981db224cd66cfcfe141ec75
SSDEEP 768:OrItKyw5WHXfQmjIiIk9ecAa6cMb964yXhDLdXgggx:Or3Z5IfQmv81awvyX5Z0
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads