nymaim | df446d870b600a0e98275fa82ab1b6ee9f372ec2551c3165371713c4b9188d29

Analysis

max time kernel
52s
max time network
54s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13-01-2023 08:02

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General

Target

file.exe
Size

1.5MB
MD5

e284a97ab4d6849ac4ae5b79a2b8a73a
SHA1

2965b059fe4ae39fc4a522bb79a18d9179a2dee5
SHA256

df446d870b600a0e98275fa82ab1b6ee9f372ec2551c3165371713c4b9188d29
SHA512

fdb673b81f9901987729b0332ef99a14c96a1e44f1a9d9ef103724d19941042b2a38705c97113aa2f09faf5224a0516f32e4b4005b1d839566e8084117f60fae
SSDEEP

24576:g20hhVe4eL8sw2Citqeb/9FOjF0mx8el5N8oMm6HBYf+kATuCqtn/:g2QVbzsw2CitD1FOjFmerqvBHdkATuCi

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:

file.tmpNitFiles451.exeHFZPAr42fxJ.exe

pid process

964 file.tmp
968 NitFiles451.exe
1120 HFZPAr42fxJ.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpNitFiles451.exe

pid process

852 file.exe
964 file.tmp
964 file.tmp
964 file.tmp
964 file.tmp
968 NitFiles451.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

pid	process
964	file.tmp
968	NitFiles451.exe
1120	HFZPAr42fxJ.exe

pid	process
852	file.exe
964	file.tmp
964	file.tmp
964	file.tmp
964	file.tmp
968	NitFiles451.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-G5EDS.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-LCD3U.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-OBCHH.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-7RIAS.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-HAAHD.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-L7SOS.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-GKSMO.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-OKC0Q.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-JQPHT.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-PAR2H.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-4KNTU.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-MOE4G.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-N7L16.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-AS3OV.tmp	file.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

1216 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

NitFiles451.exe

pid process

968 NitFiles451.exe
968 NitFiles451.exe
968 NitFiles451.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1216 taskkill.exe

pid	process
1216	taskkill.exe

pid	process
968	NitFiles451.exe
968	NitFiles451.exe
968	NitFiles451.exe

description	pid	process
Token: SeDebugPrivilege	1216	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpNitFiles451.execmd.exe

description	pid	process	target process
PID 852 wrote to memory of 964	852	file.exe	file.tmp
PID 852 wrote to memory of 964	852	file.exe	file.tmp
PID 852 wrote to memory of 964	852	file.exe	file.tmp
PID 852 wrote to memory of 964	852	file.exe	file.tmp
PID 852 wrote to memory of 964	852	file.exe	file.tmp
PID 852 wrote to memory of 964	852	file.exe	file.tmp
PID 852 wrote to memory of 964	852	file.exe	file.tmp
PID 964 wrote to memory of 968	964	file.tmp	NitFiles451.exe
PID 964 wrote to memory of 968	964	file.tmp	NitFiles451.exe
PID 964 wrote to memory of 968	964	file.tmp	NitFiles451.exe
PID 964 wrote to memory of 968	964	file.tmp	NitFiles451.exe
PID 968 wrote to memory of 1120	968	NitFiles451.exe	HFZPAr42fxJ.exe
PID 968 wrote to memory of 1120	968	NitFiles451.exe	HFZPAr42fxJ.exe
PID 968 wrote to memory of 1120	968	NitFiles451.exe	HFZPAr42fxJ.exe
PID 968 wrote to memory of 1120	968	NitFiles451.exe	HFZPAr42fxJ.exe
PID 968 wrote to memory of 1156	968	NitFiles451.exe	cmd.exe
PID 968 wrote to memory of 1156	968	NitFiles451.exe	cmd.exe
PID 968 wrote to memory of 1156	968	NitFiles451.exe	cmd.exe
PID 968 wrote to memory of 1156	968	NitFiles451.exe	cmd.exe
PID 1156 wrote to memory of 1216	1156	cmd.exe	taskkill.exe
PID 1156 wrote to memory of 1216	1156	cmd.exe	taskkill.exe
PID 1156 wrote to memory of 1216	1156	cmd.exe	taskkill.exe
PID 1156 wrote to memory of 1216	1156	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:852

C:\Users\Admin\AppData\Local\Temp\is-LKDJ1.tmp\file.tmp
"C:\Users\Admin\AppData\Local\Temp\is-LKDJ1.tmp\file.tmp" /SL5="$70122,1285935,233984,C:\Users\Admin\AppData\Local\Temp\file.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:964

C:\Program Files (x86)\Nit Files\NitFiles451.exe
"C:\Program Files (x86)\Nit Files\NitFiles451.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:968

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\HFZPAr42fxJ.exe
4⤵
- Executes dropped EXE
PID:1120

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "NitFiles451.exe" /f & erase "C:\Program Files (x86)\Nit Files\NitFiles451.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:1156

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "NitFiles451.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1216

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
2.1MB

MD5
28933edc022b544e92f817894a18e9d4

SHA1
66e700e1d232295c1663452f916bce42e3013f07

SHA256
1bae9dcea986f62736b1da000dac2225374bcd48cd2b96799304ecf651602871

SHA512
85133fcef90c77a101ea13629245863b4eed2da573866ebab8045e4d462db1b6188cb2452c109501a0e52a69f8f24bdcb9c727f9ba42567691b3de44a891720e

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
2.1MB

MD5
28933edc022b544e92f817894a18e9d4

SHA1
66e700e1d232295c1663452f916bce42e3013f07

SHA256
1bae9dcea986f62736b1da000dac2225374bcd48cd2b96799304ecf651602871

SHA512
85133fcef90c77a101ea13629245863b4eed2da573866ebab8045e4d462db1b6188cb2452c109501a0e52a69f8f24bdcb9c727f9ba42567691b3de44a891720e

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LKDJ1.tmp\file.tmp
Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LKDJ1.tmp\file.tmp
Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\HFZPAr42fxJ.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
2.1MB

MD5
28933edc022b544e92f817894a18e9d4

SHA1
66e700e1d232295c1663452f916bce42e3013f07

SHA256
1bae9dcea986f62736b1da000dac2225374bcd48cd2b96799304ecf651602871

SHA512
85133fcef90c77a101ea13629245863b4eed2da573866ebab8045e4d462db1b6188cb2452c109501a0e52a69f8f24bdcb9c727f9ba42567691b3de44a891720e

Download Submit
\Users\Admin\AppData\Local\Temp\is-K73QO.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-K73QO.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-K73QO.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-LKDJ1.tmp\file.tmp
Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\HFZPAr42fxJ.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/852-86-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/852-69-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/852-54-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

Filesize
8KB

Download
memory/852-55-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/964-81-0x0000000003670000-0x000000000468B000-memory.dmp

Filesize
16.1MB

Download
memory/964-70-0x0000000003670000-0x000000000468B000-memory.dmp

Filesize
16.1MB

Download
memory/964-58-0x0000000000000000-mapping.dmp

Download
memory/968-73-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/968-72-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/968-71-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/968-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/968-82-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/968-85-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/968-66-0x0000000000000000-mapping.dmp

Download
memory/1120-75-0x0000000000000000-mapping.dmp

Download
memory/1156-83-0x0000000000000000-mapping.dmp

Download
memory/1216-84-0x0000000000000000-mapping.dmp

Download