91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8

General

Target

91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.exe
Size

3.3MB
MD5

1b7451bf97764bb5fa83ff9726a0fb5d
SHA1

f693ce85385841a0f0708390f028e569541b9d46
SHA256

91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8
SHA512

39d6531e7a753b56ecc105ed65108a8170f8756cc40ca97c4e71c0025983b54a4f53be33c5f02162f7ea52d66fea29ebd3645f38f8b183b8e4aceaf1a1e75a2e
SSDEEP

98304:ssOoX6Vy6JPvMmZQb8Lny4UqjRynQzKkxbH6dlE:VX6o/mZcAy4Xj+Gfwdu

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
1036	mpeg4codec.exe
5008	mpeg4codec.exe

Loads dropped DLL 3 IoCs

pid	Process
3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp

Unexpected DNS network traffic destination 2 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	185.237.206.223
Destination IP	88.80.147.105

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 19 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-SA069.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-9FMUB.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-F4AOU.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File opened for modification	C:\Program Files (x86)\Common Files\BVSMPEG4\mpeg4codec.exe	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-4SH2S.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-S59EQ.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File opened for modification	C:\Program Files (x86)\Common Files\BVSMPEG4\unins000.dat	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\UIText\is-OBQB6.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\UIText\is-L8E8L.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-RLO79.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-BP9E2.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-SS7KO.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-AKUQV.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-FFQ4O.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-GOS5O.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-F7J53.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\unins000.dat	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-5A3OU.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
File created	C:\Program Files (x86)\Common Files\BVSMPEG4\is-I1K5V.tmp	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp

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

System Information Discovery
T1082
Runs net.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 3668	2492	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.exe	71
PID 2492 wrote to memory of 3668	2492	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.exe	71
PID 2492 wrote to memory of 3668	2492	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.exe	71
PID 3668 wrote to memory of 4392	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	72
PID 3668 wrote to memory of 4392	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	72
PID 3668 wrote to memory of 4392	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	72
PID 3668 wrote to memory of 1036	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	74
PID 3668 wrote to memory of 1036	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	74
PID 3668 wrote to memory of 1036	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	74
PID 3668 wrote to memory of 4800	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	77
PID 3668 wrote to memory of 4800	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	77
PID 3668 wrote to memory of 4800	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	77
PID 3668 wrote to memory of 5008	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	76
PID 3668 wrote to memory of 5008	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	76
PID 3668 wrote to memory of 5008	3668	91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp	76
PID 4800 wrote to memory of 1564	4800	net.exe	78
PID 4800 wrote to memory of 1564	4800	net.exe	78
PID 4800 wrote to memory of 1564	4800	net.exe	78

C:\Users\Admin\AppData\Local\Temp\91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.exe
"C:\Users\Admin\AppData\Local\Temp\91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Users\Admin\AppData\Local\Temp\is-BH73G.tmp\91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-BH73G.tmp\91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp" /SL5="$C0074,3245822,76288,C:\Users\Admin\AppData\Local\Temp\91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:4392
- - C:\Program Files (x86)\Common Files\BVSMPEG4\mpeg4codec.exe
    "C:\Program Files (x86)\Common Files\BVSMPEG4\mpeg4codec.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1036
- - C:\Program Files (x86)\Common Files\BVSMPEG4\mpeg4codec.exe
    "C:\Program Files (x86)\Common Files\BVSMPEG4\mpeg4codec.exe" -s
    3⤵
    - Executes dropped EXE
    PID:5008
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 28
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4800
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 28
      4⤵
      PID:1564

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Common Files\BVSMPEG4\mpeg4codec.exe

Filesize
3.8MB

MD5
a863cd83ad9b26cf86d9a916a5505134

SHA1
465f99123bfde43b7d5e841bb445f4428a9c63ae

SHA256
1e5366ce3d44c99dde2efbc19ef660beddffe65bd98a7b02e25f91f27b3c3805

SHA512
1879c5f2249be0e5dc97ecb4c73322e63c77725c8629efcefb33b71fe1f7f1f7b3a7696d311a5eac454ce4c8b5f013bdef23db30cc1ebd18aea75ce32c08a660

Download Submit
C:\Program Files (x86)\Common Files\BVSMPEG4\mpeg4codec.exe

Filesize
3.8MB

MD5
a863cd83ad9b26cf86d9a916a5505134

SHA1
465f99123bfde43b7d5e841bb445f4428a9c63ae

SHA256
1e5366ce3d44c99dde2efbc19ef660beddffe65bd98a7b02e25f91f27b3c3805

SHA512
1879c5f2249be0e5dc97ecb4c73322e63c77725c8629efcefb33b71fe1f7f1f7b3a7696d311a5eac454ce4c8b5f013bdef23db30cc1ebd18aea75ce32c08a660

Download Submit
C:\Program Files (x86)\Common Files\BVSMPEG4\mpeg4codec.exe

Filesize
3.8MB

MD5
a863cd83ad9b26cf86d9a916a5505134

SHA1
465f99123bfde43b7d5e841bb445f4428a9c63ae

SHA256
1e5366ce3d44c99dde2efbc19ef660beddffe65bd98a7b02e25f91f27b3c3805

SHA512
1879c5f2249be0e5dc97ecb4c73322e63c77725c8629efcefb33b71fe1f7f1f7b3a7696d311a5eac454ce4c8b5f013bdef23db30cc1ebd18aea75ce32c08a660

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-BH73G.tmp\91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp

Filesize
683KB

MD5
f507ce43ea08d1721816ad4b0e090f50

SHA1
e4f02bcd410bddabea4c741838d9a88386547629

SHA256
d2218bde27d66f28e3caf15e899653a9357ebdc7adf9a763b687f6c03c93e5e1

SHA512
37b2f92df632f75447572df840a236ef01021e8291536bf2e8156179333f770afdd8bcbf50cb05bbdbdaa53c00ace46119290800b115823ea035a2389a3f6693

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-BH73G.tmp\91885e402ccfc44a7feb5c8624f21732e3cb49b510ca28f1a74d5f7fdb5c42b8.tmp

Filesize
683KB

MD5
f507ce43ea08d1721816ad4b0e090f50

SHA1
e4f02bcd410bddabea4c741838d9a88386547629

SHA256
d2218bde27d66f28e3caf15e899653a9357ebdc7adf9a763b687f6c03c93e5e1

SHA512
37b2f92df632f75447572df840a236ef01021e8291536bf2e8156179333f770afdd8bcbf50cb05bbdbdaa53c00ace46119290800b115823ea035a2389a3f6693

Download Submit
\Users\Admin\AppData\Local\Temp\is-NGFMI.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-NGFMI.tmp\_isetup\_isdecmp.dll

Filesize
32KB

MD5
b6f11a0ab7715f570f45900a1fe84732

SHA1
77b1201e535445af5ea94c1b03c0a1c34d67a77b

SHA256
e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

SHA512
78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

Download Submit
\Users\Admin\AppData\Local\Temp\is-NGFMI.tmp\_isetup\_isdecmp.dll

Filesize
32KB

MD5
b6f11a0ab7715f570f45900a1fe84732

SHA1
77b1201e535445af5ea94c1b03c0a1c34d67a77b

SHA256
e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

SHA512
78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

Download Submit
memory/1036-60-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/1036-59-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/1036-63-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/1036-64-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/2492-68-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2492-0-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/3668-71-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/3668-9-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/3668-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/5008-88-0x0000000000920000-0x00000000009CD000-memory.dmp

Filesize
692KB

Download
memory/5008-89-0x0000000000920000-0x00000000009CD000-memory.dmp

Filesize
692KB

Download
memory/5008-74-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-75-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-78-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-81-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-84-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-87-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-67-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-70-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-94-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-97-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-98-0x0000000000920000-0x00000000009CD000-memory.dmp

Filesize
692KB

Download
memory/5008-101-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-104-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-107-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-110-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-113-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download
memory/5008-117-0x0000000000400000-0x00000000007D4000-memory.dmp

Filesize
3.8MB

Download

Analysis

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