nymaim | 43f4383edea2fd7fed3109a2b4fe94b02eda2ec9f6904041224e866af4d3508d

Analysis

max time kernel
64s
max time network
67s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
13-01-2023 07:01

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General

Target

file.exe
Size

1.3MB
MD5

9d6136ae1858d6c6b54199a04bac5f7c
SHA1

d1348abfe5b33f1e7e104cff7c27311548648db9
SHA256

43f4383edea2fd7fed3109a2b4fe94b02eda2ec9f6904041224e866af4d3508d
SHA512

4206f20f2c6588617d05e0967f4666118a92917fc42311c115ff5dff214d16eb7931927a8d5148705daeb00d274c04bca0e2d552b171eddd513f4227839d43e8
SSDEEP

24576:g20hhVOb64MCbykQ2JzmBtUxyVDNdJUGKzJ2wRmwWNFYf+kATuCqtn/:g2QVKsCuz2dmgxoPJomZRkATuCE/

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.exeRPQsqLxznEgJ.exe

pid process

1284 file.tmp
1644 NitFiles451.exe
1392 RPQsqLxznEgJ.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpNitFiles451.exe

pid process

604 file.exe
1284 file.tmp
1284 file.tmp
1284 file.tmp
1284 file.tmp
1644 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
1284	file.tmp
1644	NitFiles451.exe
1392	RPQsqLxznEgJ.exe

pid	process
604	file.exe
1284	file.tmp
1284	file.tmp
1284	file.tmp
1284	file.tmp
1644	NitFiles451.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Nit Files\language\is-KRM78.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-AUHKP.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.tmp
File created	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-VOUQ4.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-67KUO.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-V32RN.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-KEMLP.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-2PUHP.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-DJV6B.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-CFHIN.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-RC54A.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-IAECA.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\is-BCE37.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-JQ4H4.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-8J6FV.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

1972 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

NitFiles451.exe

pid process

1644 NitFiles451.exe
1644 NitFiles451.exe
1644 NitFiles451.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1972 taskkill.exe

pid	process
1972	taskkill.exe

pid	process
1644	NitFiles451.exe
1644	NitFiles451.exe
1644	NitFiles451.exe

description	pid	process
Token: SeDebugPrivilege	1972	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpNitFiles451.execmd.exe

description	pid	process	target process
PID 604 wrote to memory of 1284	604	file.exe	file.tmp
PID 604 wrote to memory of 1284	604	file.exe	file.tmp
PID 604 wrote to memory of 1284	604	file.exe	file.tmp
PID 604 wrote to memory of 1284	604	file.exe	file.tmp
PID 604 wrote to memory of 1284	604	file.exe	file.tmp
PID 604 wrote to memory of 1284	604	file.exe	file.tmp
PID 604 wrote to memory of 1284	604	file.exe	file.tmp
PID 1284 wrote to memory of 1644	1284	file.tmp	NitFiles451.exe
PID 1284 wrote to memory of 1644	1284	file.tmp	NitFiles451.exe
PID 1284 wrote to memory of 1644	1284	file.tmp	NitFiles451.exe
PID 1284 wrote to memory of 1644	1284	file.tmp	NitFiles451.exe
PID 1644 wrote to memory of 1392	1644	NitFiles451.exe	RPQsqLxznEgJ.exe
PID 1644 wrote to memory of 1392	1644	NitFiles451.exe	RPQsqLxznEgJ.exe
PID 1644 wrote to memory of 1392	1644	NitFiles451.exe	RPQsqLxznEgJ.exe
PID 1644 wrote to memory of 1392	1644	NitFiles451.exe	RPQsqLxznEgJ.exe
PID 1644 wrote to memory of 300	1644	NitFiles451.exe	cmd.exe
PID 1644 wrote to memory of 300	1644	NitFiles451.exe	cmd.exe
PID 1644 wrote to memory of 300	1644	NitFiles451.exe	cmd.exe
PID 1644 wrote to memory of 300	1644	NitFiles451.exe	cmd.exe
PID 300 wrote to memory of 1972	300	cmd.exe	taskkill.exe
PID 300 wrote to memory of 1972	300	cmd.exe	taskkill.exe
PID 300 wrote to memory of 1972	300	cmd.exe	taskkill.exe
PID 300 wrote to memory of 1972	300	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:604

C:\Users\Admin\AppData\Local\Temp\is-OERSR.tmp\file.tmp
"C:\Users\Admin\AppData\Local\Temp\is-OERSR.tmp\file.tmp" /SL5="$60126,1122030,233984,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:1284

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:1644

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\RPQsqLxznEgJ.exe
4⤵
- Executes dropped EXE
PID:1392

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:300

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "NitFiles451.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1972

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
1.9MB

MD5
34ddc249f699ffad909c3ea76c691b8a

SHA1
0dec28d1a1e8e8dfe4009df46556d622c8661920

SHA256
5acc1d4c527ce2d8a27dd735d9f20083f4d7579e7afed3e02cfb51faf8bf28b4

SHA512
80b5cd3fb50799b5d750092c8e668a58553c1a8c16119e5fbfff7a1fcbc565e8b8bd44407f56f667ba629b87e6b002162c6264fd258b65d812e576439d550fa8

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
1.9MB

MD5
34ddc249f699ffad909c3ea76c691b8a

SHA1
0dec28d1a1e8e8dfe4009df46556d622c8661920

SHA256
5acc1d4c527ce2d8a27dd735d9f20083f4d7579e7afed3e02cfb51faf8bf28b4

SHA512
80b5cd3fb50799b5d750092c8e668a58553c1a8c16119e5fbfff7a1fcbc565e8b8bd44407f56f667ba629b87e6b002162c6264fd258b65d812e576439d550fa8

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

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-OERSR.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}\RPQsqLxznEgJ.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
1.9MB

MD5
34ddc249f699ffad909c3ea76c691b8a

SHA1
0dec28d1a1e8e8dfe4009df46556d622c8661920

SHA256
5acc1d4c527ce2d8a27dd735d9f20083f4d7579e7afed3e02cfb51faf8bf28b4

SHA512
80b5cd3fb50799b5d750092c8e668a58553c1a8c16119e5fbfff7a1fcbc565e8b8bd44407f56f667ba629b87e6b002162c6264fd258b65d812e576439d550fa8

Download Submit
\Users\Admin\AppData\Local\Temp\is-1BD75.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-1BD75.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-1BD75.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

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

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/300-84-0x0000000000000000-mapping.dmp

Download
memory/604-65-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/604-54-0x0000000075F81000-0x0000000075F83000-memory.dmp

Filesize
8KB

Download
memory/604-87-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/604-55-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1284-77-0x00000000035E0000-0x00000000045C9000-memory.dmp

Filesize
15.9MB

Download
memory/1284-58-0x0000000000000000-mapping.dmp

Download
memory/1284-70-0x00000000035E0000-0x00000000045C9000-memory.dmp

Filesize
15.9MB

Download
memory/1392-75-0x0000000000000000-mapping.dmp

Download
memory/1644-71-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1644-78-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1644-79-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1644-83-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1644-73-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1644-86-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1644-72-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1644-67-0x0000000000000000-mapping.dmp

Download
memory/1972-85-0x0000000000000000-mapping.dmp

Download