a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834

Analysis

max time kernel
82s
max time network
100s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
26-11-2022 08:44

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General

Target

a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe
Size

675KB
MD5

520967b89e3c199aeb953dd96a5b1934
SHA1

53edcbf7659478031a05a37fe1f2df05fa4a1658
SHA256

a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834
SHA512

77a1a9a906d269ded0147563f50f78da3740497d7d23986b869556fce3effadf9088694d917d5302db8cf318d7e908f67dedf8619c5f52d22d85a9ed3a9667c7
SSDEEP

12288:cfNb4S3eYs5lSl4sRmKXsq42aJuMBvN1Bxb5dIYs3g1RwS3wGvTbd1wjop+w:ANEq+xKX62aJuYvNPd543A6S/vTPwjoh

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

irsetup.exealg.exe

pid process

2020 irsetup.exe
520 alg.exe

pid	process
2020	irsetup.exe
520	alg.exe

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
behavioral1/memory/2020-65-0x0000000000400000-0x000000000057F000-memory.dmp	upx
behavioral1/memory/2020-66-0x0000000000400000-0x000000000057F000-memory.dmp	upx
behavioral1/memory/2020-72-0x0000000000400000-0x000000000057F000-memory.dmp	upx

Loads dropped DLL 5 IoCs

Processes:

a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exeirsetup.exe

pid	process
1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe
1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe
1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe
1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe
2020	irsetup.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

irsetup.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	irsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Application Layer Gateway = "C:\\Program Files (x86)\\Common Files\\alg.exe"	irsetup.exe

Drops file in Program Files directory 2 IoCs

Processes:

irsetup.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\alg.exe	irsetup.exe
File created	C:\Program Files (x86)\Common Files\alg.exe	irsetup.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 3 IoCs

adware spyware

Modify Registry

T1112

Processes:

alg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Main	alg.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	alg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	alg.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

irsetup.exealg.exe

pid process

2020 irsetup.exe
2020 irsetup.exe
520 alg.exe
520 alg.exe

pid	process
2020	irsetup.exe
2020	irsetup.exe
520	alg.exe
520	alg.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exeirsetup.exe

description	pid	process	target process
PID 1244 wrote to memory of 2020	1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe	irsetup.exe
PID 1244 wrote to memory of 2020	1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe	irsetup.exe
PID 1244 wrote to memory of 2020	1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe	irsetup.exe
PID 1244 wrote to memory of 2020	1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe	irsetup.exe
PID 1244 wrote to memory of 2020	1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe	irsetup.exe
PID 1244 wrote to memory of 2020	1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe	irsetup.exe
PID 1244 wrote to memory of 2020	1244	a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe	irsetup.exe
PID 2020 wrote to memory of 520	2020	irsetup.exe	alg.exe
PID 2020 wrote to memory of 520	2020	irsetup.exe	alg.exe
PID 2020 wrote to memory of 520	2020	irsetup.exe	alg.exe
PID 2020 wrote to memory of 520	2020	irsetup.exe	alg.exe

C:\Users\Admin\AppData\Local\Temp\a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe
"C:\Users\Admin\AppData\Local\Temp\a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1244

C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
"C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe" __IRAOFF:654882 "__IRAFN:C:\Users\Admin\AppData\Local\Temp\a5fa03912e42b146af3cbe6dbf816137d09c29388725a1ab566f910780c92834.exe" "__IRCT:1" "__IRTSS:0" "__IRSID:S-1-5-21-3406023954-474543476-3319432036-1000"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2020

C:\Program Files (x86)\Common Files\alg.exe
"C:\Program Files (x86)\Common Files\alg.exe"
3⤵
- Executes dropped EXE
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Common Files\alg.exe
Filesize
33KB

MD5
95e93dab48ebaad753dadae83b666556

SHA1
5415f8aec7736d00ccd217ef8389721882109a21

SHA256
eb7bdd197576b898ee19bc0bd51f1902c179ce48079e8bf34b46ae675cecabca

SHA512
02b8d49bed87a9624402d593c032af34a41621128f6d050d01213f382a533079250c584cd386c6e4f5e2889f0721ecf00471dd881a2b6fc82dfb2c073e7ea84f

Download Submit
C:\Program Files (x86)\Common Files\alg.exe
Filesize
33KB

MD5
95e93dab48ebaad753dadae83b666556

SHA1
5415f8aec7736d00ccd217ef8389721882109a21

SHA256
eb7bdd197576b898ee19bc0bd51f1902c179ce48079e8bf34b46ae675cecabca

SHA512
02b8d49bed87a9624402d593c032af34a41621128f6d050d01213f382a533079250c584cd386c6e4f5e2889f0721ecf00471dd881a2b6fc82dfb2c073e7ea84f

Download Submit
C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
563KB

MD5
76da2c7c124183acf74251db2a336a79

SHA1
e3af0b141c37fe8db95397970aac0f9545e8b45a

SHA256
77a0ee56b68c5524c79201bc045aed9c212a90f4f28d5f08a8c15507df94aad0

SHA512
b160aa92810da8dc71cfffcc5ee0eeaf3058dcd39a0b1c0f02fd03436d011d9f50b46c0bea984cf3ee732162601e3a140b408655c647ff00654fa59d8fb2a8e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
563KB

MD5
76da2c7c124183acf74251db2a336a79

SHA1
e3af0b141c37fe8db95397970aac0f9545e8b45a

SHA256
77a0ee56b68c5524c79201bc045aed9c212a90f4f28d5f08a8c15507df94aad0

SHA512
b160aa92810da8dc71cfffcc5ee0eeaf3058dcd39a0b1c0f02fd03436d011d9f50b46c0bea984cf3ee732162601e3a140b408655c647ff00654fa59d8fb2a8e4

Download Submit
\Program Files (x86)\Common Files\alg.exe
Filesize
33KB

MD5
95e93dab48ebaad753dadae83b666556

SHA1
5415f8aec7736d00ccd217ef8389721882109a21

SHA256
eb7bdd197576b898ee19bc0bd51f1902c179ce48079e8bf34b46ae675cecabca

SHA512
02b8d49bed87a9624402d593c032af34a41621128f6d050d01213f382a533079250c584cd386c6e4f5e2889f0721ecf00471dd881a2b6fc82dfb2c073e7ea84f

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
563KB

MD5
76da2c7c124183acf74251db2a336a79

SHA1
e3af0b141c37fe8db95397970aac0f9545e8b45a

SHA256
77a0ee56b68c5524c79201bc045aed9c212a90f4f28d5f08a8c15507df94aad0

SHA512
b160aa92810da8dc71cfffcc5ee0eeaf3058dcd39a0b1c0f02fd03436d011d9f50b46c0bea984cf3ee732162601e3a140b408655c647ff00654fa59d8fb2a8e4

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
563KB

MD5
76da2c7c124183acf74251db2a336a79

SHA1
e3af0b141c37fe8db95397970aac0f9545e8b45a

SHA256
77a0ee56b68c5524c79201bc045aed9c212a90f4f28d5f08a8c15507df94aad0

SHA512
b160aa92810da8dc71cfffcc5ee0eeaf3058dcd39a0b1c0f02fd03436d011d9f50b46c0bea984cf3ee732162601e3a140b408655c647ff00654fa59d8fb2a8e4

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
563KB

MD5
76da2c7c124183acf74251db2a336a79

SHA1
e3af0b141c37fe8db95397970aac0f9545e8b45a

SHA256
77a0ee56b68c5524c79201bc045aed9c212a90f4f28d5f08a8c15507df94aad0

SHA512
b160aa92810da8dc71cfffcc5ee0eeaf3058dcd39a0b1c0f02fd03436d011d9f50b46c0bea984cf3ee732162601e3a140b408655c647ff00654fa59d8fb2a8e4

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
563KB

MD5
76da2c7c124183acf74251db2a336a79

SHA1
e3af0b141c37fe8db95397970aac0f9545e8b45a

SHA256
77a0ee56b68c5524c79201bc045aed9c212a90f4f28d5f08a8c15507df94aad0

SHA512
b160aa92810da8dc71cfffcc5ee0eeaf3058dcd39a0b1c0f02fd03436d011d9f50b46c0bea984cf3ee732162601e3a140b408655c647ff00654fa59d8fb2a8e4

Download Submit
memory/520-68-0x0000000000000000-mapping.dmp

Download
memory/520-71-0x000007FEF3CF0000-0x000007FEF4713000-memory.dmp

Filesize
10.1MB

Download
memory/520-73-0x000007FEEE000000-0x000007FEEF096000-memory.dmp

Filesize
16.6MB

Download
memory/520-74-0x0000000000B46000-0x0000000000B65000-memory.dmp

Filesize
124KB

Download
memory/520-75-0x0000000000B46000-0x0000000000B65000-memory.dmp

Filesize
124KB

Download
memory/1244-64-0x00000000027A0000-0x000000000291F000-memory.dmp

Filesize
1.5MB

Download
memory/1244-63-0x00000000027A0000-0x000000000291F000-memory.dmp

Filesize
1.5MB

Download
memory/1244-54-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/2020-65-0x0000000000400000-0x000000000057F000-memory.dmp

Filesize
1.5MB

Download
memory/2020-66-0x0000000000400000-0x000000000057F000-memory.dmp

Filesize
1.5MB

Download
memory/2020-59-0x0000000000000000-mapping.dmp

Download
memory/2020-72-0x0000000000400000-0x000000000057F000-memory.dmp

Filesize
1.5MB

Download