e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b

General

Target

e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe
Size

14KB
MD5

221806399f715e4b84f7ccacaaccb38c
SHA1

46b1e50a99d136ffa48426c6120122bb176a654f
SHA256

e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b
SHA512

b8ea09eeeb95eee14c4e7cabd0b26b9a4b5283843d3141130df7b95bf63e83533c79a7e1b4911391fdd6fd01c864126ebfd9ccb01c499e729add13f7535deab0
SSDEEP

384:IO3qdXlIQV0YXd45xuYiMcRWnPbeVGWLPo:IO3EVdV0YXd4DuicNV3zo

Score

9^/10

evasion upx

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 6 IoCs

resource	yara_rule
behavioral1/memory/2956-7-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3044-8-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3044-11-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3044-14-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3044-17-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/3044-20-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral1/memory/2956-0-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/files/0x000a000000015cb6-3.dat	UPX
behavioral1/memory/3044-5-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2956-7-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/3044-8-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/3044-11-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/3044-14-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/3044-17-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/3044-20-0x0000000000400000-0x0000000000414000-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
2064	attrib.exe

Deletes itself 1 IoCs

pid	Process
2616	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3044	iuyhost.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2956-0-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/files/0x000a000000015cb6-3.dat	upx
behavioral1/memory/3044-5-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2956-7-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/3044-8-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/3044-11-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/3044-14-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/3044-17-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/3044-20-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe
File opened for modification	C:\Windows\Debug\iuyhost.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	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 2064	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe	28
PID 2956 wrote to memory of 2064	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe	28
PID 2956 wrote to memory of 2064	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe	28
PID 2956 wrote to memory of 2064	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe	28
PID 2956 wrote to memory of 2616	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe	31
PID 2956 wrote to memory of 2616	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe	31
PID 2956 wrote to memory of 2616	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe	31
PID 2956 wrote to memory of 2616	2956	e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2064	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe
"C:\Users\Admin\AppData\Local\Temp\e9f7d5b7c1d5df057da73058dfc3934c523ba2e6a2f143374aa46d4eb3511b2b.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\iuyhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:2064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\E9F7D5~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2616

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
PID:3044

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\iuyhost.exe

Filesize
14KB

MD5
dc65ea7a6ac7d4188f55ba2095e07dfb

SHA1
3a2a2b066c3dd4d373e94bb86c6eed8d1377943d

SHA256
71434cfe9be291eb081f26663bf2b5b8d154ac5d0d365587412e91e4c5a108c0

SHA512
f86cb8b1c911038606a36303d72ac59283eea8a2704857b0a42e63e9641527f1484dd23e67b653c3f8ba02513c83ab74eb7425a8e1ba540bc4554860150c8291

Download Submit
memory/2956-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2956-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3044-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3044-8-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3044-11-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3044-14-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3044-17-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3044-20-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads