239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab

General

Target

239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe
Size

59KB
MD5

9642cdbed8cbe95aecd3f3bfa300cb79
SHA1

fc2bd4fbed62228fcf795522d374399749bbcb20
SHA256

239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab
SHA512

056a0f37acbf7759eeacd7542bbfde2da46971b1de215e98224e52a23f50358e766f7c509faa20c6d2df9338532217747592889b943fb0d3aa965e1304c924dd
SSDEEP

768:mrItKyw5WHXfQmjIiIk9ecAaU896KyXmuJrjTg+5lPulnp:mr3Z5IfQmv81aU85yXmIjTg4Mp

Score

9^/10

evasion upx

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral1/memory/2888-0-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2864-5-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x000d000000014698-4.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2888-6-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2864-7-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2888-0-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2864-5-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/files/0x000d000000014698-4.dat	UPX
behavioral1/memory/2888-6-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2864-7-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

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
2100	attrib.exe

Deletes itself 1 IoCs

pid	Process
2148	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2864	rwmhost.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2888-0-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2864-5-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/files/0x000d000000014698-4.dat	upx
behavioral1/memory/2888-6-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2864-7-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\rwmhost.exe	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	attrib.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2100	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe	28
PID 2888 wrote to memory of 2100	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe	28
PID 2888 wrote to memory of 2100	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe	28
PID 2888 wrote to memory of 2100	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe	28
PID 2888 wrote to memory of 2148	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe	31
PID 2888 wrote to memory of 2148	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe	31
PID 2888 wrote to memory of 2148	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe	31
PID 2888 wrote to memory of 2148	2888	239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2100	attrib.exe

C:\Users\Admin\AppData\Local\Temp\239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe
"C:\Users\Admin\AppData\Local\Temp\239a145066beb4635d484e7071587174406d9f90b85bccdb8176e70210eac8ab.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2888
- 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
  - Views/modifies file attributes
  PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\239A14~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2148

C:\Windows\Debug\rwmhost.exe
C:\Windows\Debug\rwmhost.exe
1⤵
- Executes dropped EXE
PID:2864

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

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\debug\rwmhost.exe

Filesize
59KB

MD5
6c0fe786524105b1cb64a26459ad97e6

SHA1
14e78799e3f8e33db6791fc067e14e701bd0a89e

SHA256
e042479364e189b1b16fc15382fd3f5eec14f5006ff09497379f427317fbb329

SHA512
cf6166d85fecd6722ee58a931794e31b7f949d4d9989945e87baa5eb9729e7511684ccc843fa7ef0abaa34b9d1efe647e09908b1863a80a868a13bb7dbc66fad

Download Submit
memory/2864-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2864-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2888-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2888-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads