6f6c56d0e723796b5f60dfd53fe0370cc6b33e0f61d3356213b689ea402fdab5

General

Target

ETRANSFER_RECEIPT.exe
Size

300.0MB
MD5

8dac8b61bf8c23264873a3f3bee260f5
SHA1

ba581c38574794324ea714a48671fad7f2384dbe
SHA256

7e4a1f93d53d3962a913e000524344bdcccd6d36d0856b3df38df57d4a8e1df3
SHA512

65ef0b281583e1f8303ff470dc134d8d35ccc394521fd93294cd251220af501137b17d39af91829efe0191e395c2494e1652565895647bf04a46b56fe0eae163

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

olkij.exe

pid process

832 olkij.exe

pid	process
832	olkij.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/608-137-0x00000000007C0000-0x0000000000BA4000-memory.dmp	upx
behavioral2/memory/608-138-0x00000000007C0000-0x0000000000BA4000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

ETRANSFER_RECEIPT.exe

description pid process target process

PID 1512 set thread context of 608 1512 ETRANSFER_RECEIPT.exe RegAsm.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

2340 608 WerFault.exe RegAsm.exe
4840 608 WerFault.exe RegAsm.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

4788 schtasks.exe

description	pid	process	target process
PID 1512 set thread context of 608	1512	ETRANSFER_RECEIPT.exe	RegAsm.exe

pid	pid_target	process	target process
2340	608	WerFault.exe	RegAsm.exe
4840	608	WerFault.exe	RegAsm.exe

pid	process
4788	schtasks.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

ETRANSFER_RECEIPT.execmd.exe

description	pid	process	target process
PID 1512 wrote to memory of 3100	1512	ETRANSFER_RECEIPT.exe	cmd.exe
PID 1512 wrote to memory of 3100	1512	ETRANSFER_RECEIPT.exe	cmd.exe
PID 1512 wrote to memory of 3100	1512	ETRANSFER_RECEIPT.exe	cmd.exe
PID 1512 wrote to memory of 5048	1512	ETRANSFER_RECEIPT.exe	cmd.exe
PID 1512 wrote to memory of 5048	1512	ETRANSFER_RECEIPT.exe	cmd.exe
PID 1512 wrote to memory of 5048	1512	ETRANSFER_RECEIPT.exe	cmd.exe
PID 1512 wrote to memory of 608	1512	ETRANSFER_RECEIPT.exe	RegAsm.exe
PID 1512 wrote to memory of 608	1512	ETRANSFER_RECEIPT.exe	RegAsm.exe
PID 1512 wrote to memory of 608	1512	ETRANSFER_RECEIPT.exe	RegAsm.exe
PID 3100 wrote to memory of 4788	3100	cmd.exe	schtasks.exe
PID 3100 wrote to memory of 4788	3100	cmd.exe	schtasks.exe
PID 3100 wrote to memory of 4788	3100	cmd.exe	schtasks.exe
PID 1512 wrote to memory of 608	1512	ETRANSFER_RECEIPT.exe	RegAsm.exe
PID 1512 wrote to memory of 608	1512	ETRANSFER_RECEIPT.exe	RegAsm.exe
PID 1512 wrote to memory of 608	1512	ETRANSFER_RECEIPT.exe	RegAsm.exe
PID 1512 wrote to memory of 608	1512	ETRANSFER_RECEIPT.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\ETRANSFER_RECEIPT.exe
"C:\Users\Admin\AppData\Local\Temp\ETRANSFER_RECEIPT.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Local\Temp\olkij.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3100
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Local\Temp\olkij.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:4788
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\ETRANSFER_RECEIPT.exe" "C:\Users\Admin\AppData\Local\Temp\olkij.exe"
  2⤵
  PID:5048
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:608
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 536
    3⤵
    - Program crash
    PID:2340
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 540
    3⤵
    - Program crash
    PID:4840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 608 -ip 608
1⤵
PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 608 -ip 608
1⤵
PID:1588

C:\Users\Admin\AppData\Local\Temp\olkij.exe
C:\Users\Admin\AppData\Local\Temp\olkij.exe
1⤵
- Executes dropped EXE
PID:832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\olkij.exe

Filesize
244.2MB

MD5
967414dff5bc3973b524a11c7f75079d

SHA1
c9394387e5a33313fe6c8e380241c6515daec327

SHA256
21e0c8047c4c816e4489bef29bc70726f281630cd5f4f082e0362dfc31ac0e40

SHA512
74171b41e0232df686a2c287e4c7db9f402d4e7f01419de0e8db35b5079c76ef6dad1be6f20e553a1d147d38cf74f840c61a669ea9519752091312fe22005c9d

Download Submit
C:\Users\Admin\AppData\Local\Temp\olkij.exe

Filesize
253.7MB

MD5
21aaf6fd1ec08e5b56c36ff63867bbc4

SHA1
c4bc078d1833ca955ffe76ae9765a29870a1dc4a

SHA256
69870c20213cd619202944c3e49af93e2f343de1c26b906871acbdc68dbac085

SHA512
7e38a8ac63c7677c9a5a60d091489b4bd4dc4c793790e2d52dac8a4b973e7db7c49dc81f5e798b0aed10cb2043a62c64829fb047fa80e024de3efa7b015b547a

Download Submit
memory/608-135-0x0000000000000000-mapping.dmp

Download
memory/608-137-0x00000000007C0000-0x0000000000BA4000-memory.dmp

Filesize
3.9MB

Download
memory/608-138-0x00000000007C0000-0x0000000000BA4000-memory.dmp

Filesize
3.9MB

Download
memory/1512-130-0x0000000000C40000-0x0000000000DCA000-memory.dmp

Filesize
1.5MB

Download
memory/1512-131-0x0000000005EC0000-0x0000000006464000-memory.dmp

Filesize
5.6MB

Download
memory/3100-132-0x0000000000000000-mapping.dmp

Download
memory/4788-134-0x0000000000000000-mapping.dmp

Download
memory/5048-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads