nymaim | fdf1b2a010a1cc29f04912a4b97c7393ced35c676e0ef0f0a4a9fc7465a59024

Analysis

max time kernel
61s
max time network
66s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 09:18

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General

Target

file.exe
Size

1.2MB
MD5

af9c0f4e62760bb313f17a48bebb96b3
SHA1

020b12ec8d427279ae9f003800c09b88bf69c8d9
SHA256

fdf1b2a010a1cc29f04912a4b97c7393ced35c676e0ef0f0a4a9fc7465a59024
SHA512

115e0b149c111f7d4d7adc42969c2743dcec1b90d56669faed5036c03f3732309ac7df2ef50786d2eb766646e303fd8c1d89cd6395cc59cc9761b0f7c8e3547a
SSDEEP

24576:5iz6YAWngLg2h00wF70aDsalxVhoEME95fmg29lmNM+t2sJdYTxBFy8gZIY7eCLP:y6Qn3Y00wFoaDsalxVhPuB9lmhsmanFI

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Executes dropped EXE 3 IoCs

Processes:

is-5ETC3.tmpPrintFolders.exeDslBVV.exe

pid process

1776 is-5ETC3.tmp
1528 PrintFolders.exe
1516 DslBVV.exe

pid	process
1776	is-5ETC3.tmp
1528	PrintFolders.exe
1516	DslBVV.exe

Loads dropped DLL 10 IoCs

Processes:

file.exeis-5ETC3.tmpPrintFolders.exeDslBVV.exe

pid	process
1204	file.exe
1776	is-5ETC3.tmp
1776	is-5ETC3.tmp
1776	is-5ETC3.tmp
1776	is-5ETC3.tmp
1528	PrintFolders.exe
1528	PrintFolders.exe
1528	PrintFolders.exe
1516	DslBVV.exe
1516	DslBVV.exe

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 9 IoCs

Processes:

is-5ETC3.tmp

description	ioc	process
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-5ETC3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-SFFUB.tmp	is-5ETC3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-80MBU.tmp	is-5ETC3.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-5ETC3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-8E0QC.tmp	is-5ETC3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-P5R7B.tmp	is-5ETC3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-5QJ0K.tmp	is-5ETC3.tmp
File created	C:\Program Files (x86)\PrintFolders\is-FFJOA.tmp	is-5ETC3.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-5ETC3.tmp

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

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1804 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PrintFolders.exe

pid process

1528 PrintFolders.exe
1528 PrintFolders.exe
1528 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

taskkill.exeis-5ETC3.tmp

description pid process

Token: SeDebugPrivilege 1804 taskkill.exe
Token: SeRestorePrivilege 1776 is-5ETC3.tmp
Token: SeBackupPrivilege 1776 is-5ETC3.tmp

pid	process
1804	taskkill.exe

pid	process
1528	PrintFolders.exe
1528	PrintFolders.exe
1528	PrintFolders.exe

description	pid	process
Token: SeDebugPrivilege	1804	taskkill.exe
Token: SeRestorePrivilege	1776	is-5ETC3.tmp
Token: SeBackupPrivilege	1776	is-5ETC3.tmp

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

file.exeis-5ETC3.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 1204 wrote to memory of 1776	1204	file.exe	is-5ETC3.tmp
PID 1204 wrote to memory of 1776	1204	file.exe	is-5ETC3.tmp
PID 1204 wrote to memory of 1776	1204	file.exe	is-5ETC3.tmp
PID 1204 wrote to memory of 1776	1204	file.exe	is-5ETC3.tmp
PID 1204 wrote to memory of 1776	1204	file.exe	is-5ETC3.tmp
PID 1204 wrote to memory of 1776	1204	file.exe	is-5ETC3.tmp
PID 1204 wrote to memory of 1776	1204	file.exe	is-5ETC3.tmp
PID 1776 wrote to memory of 1528	1776	is-5ETC3.tmp	PrintFolders.exe
PID 1776 wrote to memory of 1528	1776	is-5ETC3.tmp	PrintFolders.exe
PID 1776 wrote to memory of 1528	1776	is-5ETC3.tmp	PrintFolders.exe
PID 1776 wrote to memory of 1528	1776	is-5ETC3.tmp	PrintFolders.exe
PID 1776 wrote to memory of 1528	1776	is-5ETC3.tmp	PrintFolders.exe
PID 1776 wrote to memory of 1528	1776	is-5ETC3.tmp	PrintFolders.exe
PID 1776 wrote to memory of 1528	1776	is-5ETC3.tmp	PrintFolders.exe
PID 1528 wrote to memory of 1516	1528	PrintFolders.exe	DslBVV.exe
PID 1528 wrote to memory of 1516	1528	PrintFolders.exe	DslBVV.exe
PID 1528 wrote to memory of 1516	1528	PrintFolders.exe	DslBVV.exe
PID 1528 wrote to memory of 1516	1528	PrintFolders.exe	DslBVV.exe
PID 1528 wrote to memory of 1516	1528	PrintFolders.exe	DslBVV.exe
PID 1528 wrote to memory of 1516	1528	PrintFolders.exe	DslBVV.exe
PID 1528 wrote to memory of 1516	1528	PrintFolders.exe	DslBVV.exe
PID 1528 wrote to memory of 1492	1528	PrintFolders.exe	cmd.exe
PID 1528 wrote to memory of 1492	1528	PrintFolders.exe	cmd.exe
PID 1528 wrote to memory of 1492	1528	PrintFolders.exe	cmd.exe
PID 1528 wrote to memory of 1492	1528	PrintFolders.exe	cmd.exe
PID 1528 wrote to memory of 1492	1528	PrintFolders.exe	cmd.exe
PID 1528 wrote to memory of 1492	1528	PrintFolders.exe	cmd.exe
PID 1528 wrote to memory of 1492	1528	PrintFolders.exe	cmd.exe
PID 1492 wrote to memory of 1804	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1804	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1804	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1804	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1804	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1804	1492	cmd.exe	taskkill.exe
PID 1492 wrote to memory of 1804	1492	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1204

C:\Users\Admin\AppData\Local\Temp\is-S4I37.tmp\is-5ETC3.tmp
"C:\Users\Admin\AppData\Local\Temp\is-S4I37.tmp\is-5ETC3.tmp" /SL4 $70124 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1049087 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1528

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\DslBVV.exe
4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1516

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:1492

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1804

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
49ee91c22537d68b8ae90e2214158503

SHA1
109324af92e645ad251d0163432992c550bf04b4

SHA256
e4eeefbd589c7e41e81e07e5ac62f27d8dc3d7cd5c9d4053697cef077242dd2e

SHA512
e0b8a32c616260445ef7e44da67472bfe7f372942f4844d972b79c7e9ec50aa97017a8927f43511b03a16aef18687325073ba5699746ea34a161c5ac8c69ba19

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
49ee91c22537d68b8ae90e2214158503

SHA1
109324af92e645ad251d0163432992c550bf04b4

SHA256
e4eeefbd589c7e41e81e07e5ac62f27d8dc3d7cd5c9d4053697cef077242dd2e

SHA512
e0b8a32c616260445ef7e44da67472bfe7f372942f4844d972b79c7e9ec50aa97017a8927f43511b03a16aef18687325073ba5699746ea34a161c5ac8c69ba19

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-S4I37.tmp\is-5ETC3.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-S4I37.tmp\is-5ETC3.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\DslBVV.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\DslBVV.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
49ee91c22537d68b8ae90e2214158503

SHA1
109324af92e645ad251d0163432992c550bf04b4

SHA256
e4eeefbd589c7e41e81e07e5ac62f27d8dc3d7cd5c9d4053697cef077242dd2e

SHA512
e0b8a32c616260445ef7e44da67472bfe7f372942f4844d972b79c7e9ec50aa97017a8927f43511b03a16aef18687325073ba5699746ea34a161c5ac8c69ba19

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
49ee91c22537d68b8ae90e2214158503

SHA1
109324af92e645ad251d0163432992c550bf04b4

SHA256
e4eeefbd589c7e41e81e07e5ac62f27d8dc3d7cd5c9d4053697cef077242dd2e

SHA512
e0b8a32c616260445ef7e44da67472bfe7f372942f4844d972b79c7e9ec50aa97017a8927f43511b03a16aef18687325073ba5699746ea34a161c5ac8c69ba19

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.4MB

MD5
49ee91c22537d68b8ae90e2214158503

SHA1
109324af92e645ad251d0163432992c550bf04b4

SHA256
e4eeefbd589c7e41e81e07e5ac62f27d8dc3d7cd5c9d4053697cef077242dd2e

SHA512
e0b8a32c616260445ef7e44da67472bfe7f372942f4844d972b79c7e9ec50aa97017a8927f43511b03a16aef18687325073ba5699746ea34a161c5ac8c69ba19

Download Submit
\Users\Admin\AppData\Local\Temp\is-2BHKR.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-2BHKR.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-2BHKR.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-S4I37.tmp\is-5ETC3.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\DslBVV.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\DslBVV.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\DslBVV.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1204-65-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1204-99-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1204-55-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1204-54-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/1492-94-0x0000000000000000-mapping.dmp

Download
memory/1516-80-0x0000000000000000-mapping.dmp

Download
memory/1528-93-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/1528-74-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/1528-67-0x0000000000000000-mapping.dmp

Download
memory/1528-78-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/1528-75-0x00000000018D0000-0x0000000002843000-memory.dmp

Filesize
15.4MB

Download
memory/1528-77-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/1528-97-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/1528-87-0x0000000000400000-0x0000000001373000-memory.dmp

Filesize
15.4MB

Download
memory/1528-88-0x00000000018D0000-0x0000000002843000-memory.dmp

Filesize
15.4MB

Download
memory/1528-89-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1528-76-0x00000000018D0000-0x0000000002843000-memory.dmp

Filesize
15.4MB

Download
memory/1776-73-0x0000000003100000-0x0000000004073000-memory.dmp

Filesize
15.4MB

Download
memory/1776-86-0x0000000003100000-0x0000000004073000-memory.dmp

Filesize
15.4MB

Download
memory/1776-58-0x0000000000000000-mapping.dmp

Download
memory/1804-96-0x0000000000000000-mapping.dmp

Download